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|author = [[Jimmy Wales]] and [[Larry Sanger]]
|author = [[Jimmy Wales]] and [[Larry Sanger]]
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'''Wikipedia''' ([[IPA chart for English|IPA]]: [{{IPA|/ˌwɪkiˈpiːdi.ə/}}] or [{{IPA|/ˌwiki-/}}]) is a [[Multilingualism|multilingual]] [[World Wide Web|Web]]-based [[Free content|free-content]] [[encyclopedia]]. It exists as a [[wiki]], and is written collaboratively by [[volunteer]]s, allowing most articles to be changed by anyone with access to a computer and [[web browser]] and an [[Internet]] connection. The project began on [[January 15]], [[2001]], as a complement to the expert-written (and now defunct) [[Nupedia]], and is now operated by the [[Non-profit organization|non-profit]] [[Wikimedia|Wikimedia Foundation]]. Wikipedia has more than 3,700,000 articles in many languages, including more than 1,000,000 in the [[English Wikipedia|English-language version]]. <!-- using {{NUMBEROFARTICLES}} would make things difficult for mirrors and doesn't work right with respect to article history! -->Since its inception, Wikipedia has steadily risen in popularity,<ref>See plots at "[http://en.wikipedia.org/wikistats/EN/PlotsPngUsageVisits.htm Visits per day]", Wikipedia Statistics, [[1 January]] [[2005]]</ref> and has spawned several sister projects. Editors are required to uphold a policy of "[[neutral point of view]]" under which notable perspectives are summarized without an attempt to determine an [[objectivity (journalism)|objective]] truth.
'''Wikipedia''' ([[IPA chart for English|IPA]]: [{{IPA|/ˌwɪkiˈpiːdi.ə/}}] or [{{IPA|/ˌwiki-/}}]) is a [[multilingualism|multilingual]] [[World Wide Web|Web]]-based [[Free content|free-content]] [[encyclopedia]].<ref>Some critics have suggested that Wikipedia cannot justifiably be called an "encyclopedia", a term which (it is claimed) implies a high degree of reliability and authority that Wikipedia, due to its open editorial policies, may not be able to maintain. However, Wikipedia meets all the criteria for the basic definition of the word ''encyclopedia''.</ref> It exists as a [[wiki]], a type of [[website]] that allows visitors to edit its content; the word ''Wikipedia'' itself is a [[portmanteau]] of ''wiki'' and ''encyclopedia''. Wikipedia is written collaboratively by [[volunteer]]s, allowing most articles to be changed by anyone with access to a computer, [[web browser]] and [[Internet]] connection. The project began on [[January 15]], [[2001]] as a complement to the expert-written (and now defunct) [[Nupedia]], and is now operated by the [[non-profit organization|non-profit]] [[Wikimedia Foundation]]. Wikipedia has more than 3,700,000 articles in many languages, including more than 1,000,000 in the [[English Wikipedia|English-language version]].<!-- using {{NUMBEROFARTICLES}} would make things difficult for mirrors and doesn't work right with respect to article history! --> Since its inception, Wikipedia has steadily risen in popularity<ref>See plots at "[http://en.wikipedia.org/wikistats/EN/PlotsPngUsageVisits.htm Visits per day]", Wikipedia Statistics, [[January 1]], [[2005]]</ref> and has spawned several sister projects. Editors are required to uphold a policy of "neutral point of view", under which notable perspectives are summarized without an attempt to determine an [[objectivity (journalism)|objective]] truth.


Wikipedia's co-founder [[Jimmy Wales]] has called it "an effort to create and distribute a multilingual free encyclopedia of the highest possible quality to every single person on the planet in their own language."<ref>[[Jimmy Wales]], "[http://mail.wikipedia.org/pipermail/wikipedia-l/2005-March/038102.html Wikipedia is an encyclopedia]", [[8 March]] [[2005]], <wikipedia-l@wikimedia.org></ref> However, there has been controversy over its reliability and accuracy. Common points of criticism are vandalism, inconsistency, uneven quality, unsubstantiated opinions, [[systemic bias]], and preference of [[consensus]] or [[popularity]] to [[credentials]]. In addition, some critics have suggested that Wikipedia cannot justifiably be called an "encyclopedia", a term which (it is claimed) implies a high degree of reliability and authority that Wikipedia, due to its open editorial policies, may not be able to maintain. Nevertheless, its free distribution, constant updates, diverse and detailed coverage, and its numerous multilingual versions have made it a much-used reference source for many. The word "Wikipedia" is a [[portmanteau]] of [[wiki]] and [[encyclopedia]].
Wikipedia's co-founder, [[Jimmy Wales]], has called Wikipedia "an effort to create and distribute a multilingual free encyclopedia of the highest possible quality to every single person on the planet in their own language."<ref>[[Jimmy Wales]], "[http://mail.wikipedia.org/pipermail/wikipedia-l/2005-March/038102.html Wikipedia is an encyclopedia]", [[March 8]], [[2005]], <wikipedia-l@wikimedia.org></ref> However, there has been controversy over Wikipedia's reliability and accuracy, with the site receiving criticism for its susceptibility to vandalism, uneven quality and inconsistency, [[systemic bias]], and preference of [[consensus]] or [[popularity]] over [[credential]]s. Nevertheless, its free distribution, constant updates, diverse and detailed coverage, and numerous multilingual versions have made it one of the most-used reference sources on the Internet.


There are over 200 [[language]] editions of Wikipedia, around 130 of which are active. Fourteen editions have more than 50,000 articles each: [[English Wikipedia|English]], [[German Wikipedia|German]], [[French Wikipedia|French]], [[Polish Wikipedia|Polish]], [[Japanese Wikipedia|Japanese]], [[Dutch Wikipedia|Dutch]], [[Italian Wikipedia|Italian]], [[Swedish Wikipedia|Swedish]], [[Portuguese Wikipedia|Portuguese]], [[Spanish Wikipedia|Spanish]], [[Russian Wikipedia|Russian]], [[Chinese Wikipedia|Chinese]], [[Norwegian Wikipedia|Norwegian]], and [[Finnish Wikipedia|Finnish]]. Its German-language edition has been distributed on [[DVD-ROM]], and there are also proposals for an English DVD/paper edition. Many of its other editions are [[Mirror (computing)|mirrored]] or have been [[Fork (software development)|forked]] by other [[website]]s.
There are over 200 language editions of Wikipedia, around 130 of which are active. Fourteen editions have more than 50,000 articles each: [[English Wikipedia|English]] (the original), [[German Wikipedia|German]], [[French Wikipedia|French]], [[Polish Wikipedia|Polish]], [[Japanese Wikipedia|Japanese]], [[Dutch Wikipedia|Dutch]], [[Italian Wikipedia|Italian]], [[Swedish Wikipedia|Swedish]], [[Portuguese Wikipedia|Portuguese]], [[Spanish Wikipedia|Spanish]], [[Russian Wikipedia|Russian]], [[Chinese Wikipedia|Chinese]], [[Norwegian Wikipedia|Norwegian]] and [[Finnish Wikipedia|Finnish]]. Its German-language edition has been distributed on [[DVD|DVD-ROM]], and there are also proposals for an English DVD or paper edition. Many of its other editions are [[mirror (computing)|mirrored]] or have been [[fork (software development)|forked]] by other websites.


==Characteristics==
==Characteristics==
[[Image:Wikipedia-logo.png|thumb|The [[Wikipedia logo|''Wikipedia'' logo]].]]
[[Image:Wikipedia-logo.png|thumb|The [[Wikipedia logo]].]]

Wikipedia's slogan is "The free encyclopedia that anyone can edit." It is developed using a type of [[computer software|software]] called a "[[wiki]]", a term originally used for the [[WikiWikiWeb]] and derived from the [[Hawaiian language|Hawaiian]] ''wiki wiki'', which means "quick." Jimmy Wales intends for Wikipedia to achieve a "''[[Encyclopædia Britannica|Britannica]]'' or better" quality and be published in print.
Wikipedia's slogan is "the free encyclopedia that anyone can edit." It is developed using a type of [[computer software|software]] called a "[[wiki]]", a term originally used for the [[WikiWikiWeb]] and derived from the [[Hawaiian language|Hawaiian]] ''wiki wiki'', which means "quick". Jimmy Wales intends for Wikipedia to ultimately achieve a "''[[Encyclopædia Britannica|Britannica]]'' or better" level of quality and be published in print.
Although several other [[Internet encyclopedia project|encyclopedia projects]] exist or have existed on the [[Internet]], not one has achieved Wikipedia's size and popularity. Traditional multilingual editorial policies and article ownership are used in some, such as the expert-written ''[[Stanford Encyclopedia of Philosophy]]'' and the now-defunct ''[[Nupedia]]''. More casual websites such as [[H2G2|h2g2]] or [[Everything2]] serve as general guides, the articles of which are written and controlled by individuals. Projects such as Wikipedia, [[Susning.nu]], ''[[Enciclopedia Libre]]'' and ''[[WikiZnanie]]'' are wikis in which articles are developed by numerous authors, and there is no formal process of review. Wikipedia has become the largest such encyclopedic wiki by article and word count. Unlike many encyclopedias, it has licensed its content under the [[GNU Free Documentation License]].

Although several other [[Internet encyclopedia project|encyclopedia projects]] exist or have existed on the [[Internet]], none have achieved Wikipedia's size or popularity. Traditional multilingual editorial policies and article ownership are used in some, such as the expert-written ''[[Stanford Encyclopedia of Philosophy]]'', the now-defunct [[Nupedia]], and the more casual [[H2G2|h2g2]] and [[Everything2]]. Projects such as Wikipedia, [[Susning.nu]], ''[[Enciclopedia Libre]]'' and [[WikiZnanie]] are other wikis in which articles are developed by numerous authors, and there is no formal process of review. Wikipedia has become the largest such encyclopedic wiki by article and word count. Unlike many encyclopedias, it has licensed its content under the [[GNU Free Documentation License]].


Wikipedia has a set of policies identifying types of information appropriate for inclusion. These policies are often cited in disputes over whether particular content should be added, revised, transferred to a sister project, or removed.
Wikipedia has a set of policies identifying types of information appropriate for inclusion. These policies are often cited in disputes over whether particular content should be added, revised, transferred to a sister project, or removed.


===Free content===
===Free content===
The [[GNU Free Documentation License]] (GFDL), the license through which Wikipedia's articles are made available, is one of many "[[copyleft]]" [[copyright]] licenses that permit the redistribution, creation of [[derivative work]]s, and commercial use of content provided its authors are attributed and this content remains available under the GFDL. When an author contributes original material to the project, the [[copyright]] over it is retained with them, but they agree to make the work available under the GFDL. Material on Wikipedia may thus be distributed multilingually to, or incorporated from, resources which also use this license. Wikipedia's content has been mirrored or forked by hundreds of resources from database dumps. Although all text is available under the GFDL, a significant percentage of Wikipedia's images and sounds are non-free. Items such as [[corporate logo]]s, song samples, or copyrighted news photos are used with a claim of [[fair use]]. <ref>"[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_as_a_press_source_2005 Wikipedia as a press source 2005]", Wikipedia ([[28 March]] [[2005]])</ref> Less frequently, it has been used in academic studies, books, conferences, and court cases. For instance, the [[Parliament of Canada]] website refers to Wikipedia's article on [[same-sex marriage]] in the "further reading" list of [[Bill C-38]].<ref>"[http://www.parl.gc.ca/LEGISINFO/index.asp?Lang=E&Chamber=C&StartList=2&EndList=200&Session=13&Type=0&Scope=I&query=4381&List=toc C-38]", LEGISINFO ([[28 March]] [[2005]])</ref> Noncomprehensive lists of such uses are maintained by ''Wikipedians''. <ref>[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_as_a_source Wikipedia as a source]</ref>
The [[GNU Free Documentation License]] (GFDL), the license through which Wikipedia's articles are made available, is one of many "[[copyleft]]" [[copyright]] licenses that permit the redistribution, creation of [[derivative work]]s, and commercial use of content, provided that its authors are attributed and this content remains available under the GFDL. When an author contributes original material to the project, the copyright over it is retained by them, but they agree to make the work available under the GFDL. Material on Wikipedia may thus be distributed multilingually to, or incorporated from, resources which also use this license.
Wikipedia's content has been mirrored and forked by hundreds of resources from database dumps. Although all text is available under the GFDL, a significant percentage of Wikipedia's images and sounds are not free. Items such as [[corporate logo]]s, song samples, or copyrighted news photos are used with a claim of [[fair use]].<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_as_a_press_source_2005 Wikipedia as a press source 2005]", Wikipedia ([[March 28]], [[2005]])</ref> Wikipedia content has also been used in academic studies, books, conferences, and court cases, albeit much more rarely. For example, the [[Parliament of Canada]] website refers to Wikipedia's article on [[same-sex marriage]] in the "further reading" list of [[Civil Marriage Act]].<ref>"[http://www.parl.gc.ca/LEGISINFO/index.asp?Lang=E&Chamber=C&StartList=2&EndList=200&Session=13&Type=0&Scope=I&query=4381&List=toc C-38]", LEGISINFO ([[March 28]], [[2005]])</ref> Some Wikipedia users, or ''Wikipedians'', maintain (noncomprehensive) lists of such uses.<ref>[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_as_a_source Wikipedia as a source]</ref>


===Language editions===
===Language editions===
[[Image:Wikipedia growth.png|thumb|300px|Wikipedia's article count has grown quickly in several of the major language editions.]]
[[Image:Wikipedia growth.png|left|thumb|300px|Wikipedia's article count has grown quickly in several of the major language editions.]]


Wikipedia encompasses 132 "active" language editions (100+ articles) as of April 2006.<ref name=CompleteList>"[http://meta.wikimedia.org/wiki/Complete_list_of_language_Wikipedias_available Complete list of language Wikipedias available]", Meta-Wiki ([[15 April]] [[2006]])</ref> Its five largest editions are, in descending order, [[English Wikipedia|English]], [[German Wikipedia|German]], [[French Wikipedia|French]], [[Polish Wikipedia|Polish]] and [[Japanese Wikipedia|Japanese]]. In total, Wikipedia contains 229 language editions of varying states with a combined 3.5 million articles.<ref>"[http://meta.wikimedia.org/wiki/Complete_list_of_language_Wikipedias_available Complete list of language Wikipedias available]", Meta-Wiki, [[15 April]] [[2006]]</ref>
Wikipedia encompasses 132 "active" language editions (ones with 100+ articles) as of April 2006.<ref name=CompleteList>"[http://meta.wikimedia.org/wiki/Complete_list_of_language_Wikipedias_available Complete list of language Wikipedias available]", Meta-Wiki ([[April 15]], [[2006]])</ref> Its five largest editions are, in descending order, [[English Wikipedia|English]], [[German Wikipedia|German]], [[French Wikipedia|French]], [[Polish Wikipedia|Polish]] and [[Japanese Wikipedia|Japanese]]. In total, Wikipedia contains 229 language editions of varying states, with a combined 3.5 million articles.<ref>"[http://meta.wikimedia.org/wiki/Complete_list_of_language_Wikipedias_available Complete list of language Wikipedias available]", Meta-Wiki, [[April 15]], [[2006]]</ref>


Language editions operate independently of one another. Editions are not bound to the content of other language editions or direct translations of each other; nor are articles on the same subject required to be translations of each other. Automated translation of articles is explicitly disallowed, though multi-lingual editors of sufficient fluency are encouraged to translate articles by hand. The various language editions ''are'' held to global policies such as "neutral point of view". Articles and images are nonetheless shared between Wikipedia editions, the former through pages to request translations organized on many of the larger language editions, and the latter through the [[Wikimedia Commons]] repository. Translated articles represent only a small portion of articles in any edition.<ref>For example, "[http://en.wikipedia.org/wiki/Wikipedia:Translation_into_English Translation into English]," Wikipedia. ([[9 March]] [[2005]])</ref>
Language editions operate independently of one another. Editions are not bound to the content of other language editions or direct translations of each other, nor are articles on the same subject required to be translations of each other. Automated translation of articles is explicitly disallowed, though multi-lingual editors of sufficient fluency are encouraged to translate articles by hand. The various language editions ''are'' held to global policies such as "neutral point of view", though they may diverge on subtler points of policy and practice. Articles and images are shared between Wikipedia editions, the former through "[[InterWiki]]" links and pages to request translations, and the latter through the [[Wikimedia Commons]] repository. Translated articles represent only a small portion of articles in any edition.<ref>For example, "[http://en.wikipedia.org/wiki/Wikipedia:Translation_into_English Translation into English]," Wikipedia. ([[March 9]], [[2005]])</ref>


The following is a list of the large editions, sorted by number of articles as of [[1 March]] [[2006]]. (The article count, however, is a limited metric for comparing the editions. For instance, in some Wikipedia versions nearly half of the articles are short articles created automatically by [[internet bot|robots]]. <ref name=CompleteList/>)
The following is a list of the large editions, sorted by number of articles as of [[March 1]], [[2006]]. (The article count, however, is a limited metric for comparing the editions. For instance, in some Wikipedia versions nearly half of the articles are short articles created automatically by [[internet bot|robots]].<ref name=CompleteList/>)
[[Image:He-Wikipedia.png|right|thumb|330px|An example of Wikipedia's range in language editions: Wikipedia in [[Hebrew language|Hebrew]]. [http://he.wikipedia.org/wiki/] ]]
[[Image:He-Wikipedia.png|right|thumb|330px|An example of Wikipedia's range in language editions: Wikipedia in [[Hebrew language|Hebrew]]. [http://he.wikipedia.org/wiki/] ]]


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===Editing===
===Editing===
[[Image:History comparison example.png|thumb|400px|right|Editors keep track of changes to articles by checking the difference between two revisions of a page, displayed here in red.]]
[[Image:History comparison example.png|thumb|left|300px|Editors keep track of changes to articles by checking the difference between two revisions of a page, displayed here in red.]]


Almost all visitors may edit Wikipedia's content, and registered users can create new articles and have their changes instantly displayed. Wikipedia is built on the expectation that collaboration among users will improve articles over time, in much the same way that [[open source|open-source software]] develops. Although many users may tend to add nonsense to the encyclopedia, flaws and invalid comments will be found and deleted immediately. Further, this real-time, collaborative model allows rapid updating of existing topics and introduction of new topics. The authors need not have any expertise or formal qualifications in the subjects which they edit, and users are warned that their contributions may be "edited mercilessly and redistributed at will" by anyone who so wishes. Its articles are not controlled by any particular user or editorial group. Decision-making on the content and editorial policies of Wikipedia is instead done by [[Consensus decision-making|consensus]] and, occasionally, by vote. [[Jimmy Wales]] retains final judgement on Wikipedia policies and user guidelines.<ref>"[http://meta.wikimedia.org/wiki/Power_structure Power structure]", Meta-Wiki, 10:55 [[4 April]] [[2005]]</ref>
Almost all visitors may edit Wikipedia's content, and registered users can create new articles and have their changes instantly displayed. Wikipedia is built on the expectation that collaboration among users will improve articles over time, in much the same way that [[open source|open-source software]] develops. Some of Wikipedia's editors have explained its editing process as a "[[social Darwinism|socially Darwinian]] [[Evolution|evolutionary]] process",<ref>"[http://meta.wikimedia.org/wiki/Wikipedia_sociology Wikipedia sociology]", Meta-Wiki, 23:30 [[March 24]], [[2005]]</ref> but this description is not accepted by most Wikipedians.


Although many users take advantage of Wikipedia's [[openness]] to add nonsense to the encyclopedia, most deliberately disruptive edits and comments are quickly found and deleted by other editors. This real-time, collaborative model allow editors to rapidly update existing topics as they develop and to introduce new ones as they arise. However, this collaboration also sometimes leads to "edit wars" and prolonged disputes when editors do not agree.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Edit_war Edit war]", Wikipedia ([[March 26]], [[2005]])</ref>
By the nature of its [[openness]], "edit wars" and prolonged disputes often occur when editors do not agree.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Edit_war Edit war]", Wikipedia ([[26 March]] [[2005]])</ref> A few members of its community have explained its editing process as a collaborative work, a "[[Social Darwinism|socially Darwinian]] [[Evolution|evolutionary]] process"<ref>"[http://meta.wikimedia.org/wiki/Wikipedia_sociology Wikipedia sociology]", Meta-Wiki, 23:30 [[24 March]] [[2005]]</ref>, but this is not generally considered by the community to be an accurate self-description. Articles are always subject to editing, unless the article is protected for a short time due to vandalism or revert wars; therefore, Wikipedia does not declare any article finished. Some users attempt to enter malicious or amusing but irrelevant information, but changes of this sort are normally removed quickly.
[[Image:Recentchanges.png|thumb|250px|left|English Wikipedia's recent changes: a page which shows recent edits on Wikipedia. This page is often watched by users who fight vandalism on Wikipedia. There also exists a live recent changes which can be seen on the [[IRC]]-channel [irc://irc.wikimedia.org/en.wikipedia #en.wikipedia].]]
[[Image:Recentchanges.png|thumb|right|250px|The "recent changes" page shows the newest edits to the English Wikipedia. This page is often watched by users who revert vandalism. There is also a live recent changes [[Internet Relay Chat|IRC]] channel, [irc://irc.wikimedia.org/en.wikipedia #en.wikipedia].]]
Articles are always subject to editing, unless the article is protected for a short time due to the aforementioned vandalism or revert wars; Wikipedia does not declare any of its articles to be "complete" or "finished". The authors of articles need not have any expertise or formal qualifications in the subjects which they edit, and users are warned that their contributions may be "edited mercilessly and redistributed at will" by anyone who wishes to do so. Its articles are not controlled by any particular user or editorial group; decisions on the content and editorial policies of Wikipedia are instead made largely through [[consensus decision-making]] and, occasionally, by vote. [[Jimmy Wales]] retains final judgement on Wikipedia policies and user guidelines.<ref>"[http://meta.wikimedia.org/wiki/Power_structure Power structure]", Meta-Wiki, 10:55 [[April 4]], [[2005]]</ref>
Regular users often maintain a "watchlist" of articles of interest to them, so that they are immediately shown which of these articles have changed since their last log in. This allows monitoring of daily editing to prevent false information and spam, and also to keep up with other editors' views, or updates, of the subjects on the watchlist.


Regular users often maintain a "watchlist" of articles of interest to them, so that they can easily keep tabs on all recent changes to those articles, including new updates, discussions, and vandalism. Most past edits to Wikipedia articles also remain viewable after the fact, and are stored on "edit history" pages sorted chronologically, making it possible to see former versions of any page at any time. The only exceptions are the entire histories of articles which have been deleted, and many individual edits which contain [[libel]]lous statements, copyright violations, and other content which could incur legal liability or be otherwise detrimental to Wikipedia; these edits may only be viewed by Wikipedia administrators.
Because of the wiki-principle most edits of Wikipedia articles are kept within an edit history which can be viewed by everyone. Exceptions include whole articles which are deleted (their histories are no longer available to anyone other than Wikipedia administrators), and revisions of articles which may contain [[Libel|libellous]] statements, copyright violations, or other content which may incur legal liability or which may be highly detrimental to the project. As a result, Wikipedia is the first major encyclopedia where everybody can see how an article evolved over time and whether the content of an article was ever controversial. Other than the exceptions noted above, all controversial standpoints which were once voiced and afterwards deleted - and even simple vandalism - remain visible for everyone, providing additional information about the article's topic and its degree of controversy, and adding the dimension of time to every article.


==History==
==History==
{{main|History of Wikipedia}}
{{main|History of Wikipedia}}


[[Image:NupediaLogo.jpg|thumb||250px|Wikipedia "originated" from ''[[Nupedia]]''.]]
[[Image:NupediaLogo.jpg|thumb|left|250px|Wikipedia originally developed out of another encyclopedia project, [[Nupedia]].]]


Wikipedia began as a complementary project for ''[[Nupedia]]'', a free online encyclopedia project whose articles were written by experts through a formal process. Nupedia was founded on [[9 March]] [[2000]] under the ownership of [[Bomis|Bomis, Inc]], a Web portal company. Its principal figures were [[Jimmy Wales]], Bomis [[CEO]], and [[Larry Sanger]], [[editor-in-chief]] for Nupedia and later Wikipedia. Nupedia was described by Sanger as differing from existing encyclopedias in being [[open content]]; not having size limitations, as it was on the [[Internet]]; and being free of bias, due to its public nature and potentially broad base of contributors.<ref name=QANupedia>Larry Sanger, "[http://web.archive.org/web/20000510132952/www.nupedia.com/interview.html Q & A about Nupedia]", Nupedia, March 2000</ref> Nupedia had a seven-step review process by appointed subject-area experts, but later came to be viewed as too slow for producing a limited number of articles. Funded by Bomis, there were initial plans to recoup its investment by the use of advertisements.<ref name=QANupedia/> It was licensed under its own Nupedia Open Content License initially, switching to the GNU Free Documentation License prior to Wikipedia's founding at the urging of [[Richard Stallman]].
Wikipedia began as a complementary project for [[Nupedia]], a free online encyclopedia project whose articles were written by experts through a formal process. Nupedia was founded on [[March 9]], [[2000]] under the ownership of [[Bomis|Bomis, Inc]], a Web portal company. Its principal figures were [[Jimmy Wales]], Bomis [[CEO]], and [[Larry Sanger]], [[editor-in-chief]] for Nupedia and later Wikipedia. Nupedia was described by Sanger as differing from existing encyclopedias in being [[open content]], in not having size limitations, as it was on the [[Internet]], and in being free of bias, due to its public nature and potentially broad base of contributors.<ref name=QANupedia>Larry Sanger, "[http://web.archive.org/web/20000510132952/www.nupedia.com/interview.html Q & A about Nupedia]", Nupedia, March 2000</ref> Nupedia had a seven-step review process by appointed subject-area experts, but later came to be viewed as too slow for producing a limited number of articles. Funded by Bomis, there were initial plans to recoup its investment by the use of advertisements.<ref name=QANupedia/> It was initially licensed under its own Nupedia Open Content License, switching to the GNU Free Documentation License prior to Wikipedia's founding at the urging of [[Richard Stallman]].


On [[January 10]], [[2001]], Larry Sanger proposed on the Nupedia mailing list to create a wiki alongside Nupedia. Under the subject "Let's make a wiki", he wrote:
[[Image:WikipediaHomePage30March200.png|thumb|300px|right|Wikipedia's English edition on [[March 30]], [[2001]], two and a half months after its founding.]]

On [[January 10]] [[2001]], Larry Sanger proposed on the Nupedia mailing list to create a wiki alongside Nupedia. Under the subject "Let's make a wiki", he wrote:


<blockquote> No, this is not an indecent proposal. It's an idea to add a little feature to Nupedia. [[Jimmy Wales]] thinks that many people might find the idea objectionable, but I think not. (…) As to Nupedia's use of a wiki, this is the ULTIMATE "open" and simple format for developing content. We have occasionally bandied about ideas for simpler, more open projects to either replace or supplement Nupedia. It seems to me wikis can be implemented practically instantly, need very little maintenance, and in general are very low-risk. They're also a potentially great source for content. So there's little downside, as far as I can see.<ref>{{cite news
<blockquote> No, this is not an indecent proposal. It's an idea to add a little feature to Nupedia. Jimmy Wales thinks that many people might find the idea objectionable, but I think not. (…) As to Nupedia's use of a wiki, this is the ULTIMATE "open" and simple format for developing content. We have occasionally bandied about ideas for simpler, more open projects to either replace or supplement Nupedia. It seems to me wikis can be implemented practically instantly, need very little maintenance, and in general are very low-risk. They're also a potentially great source for content. So there's little downside, as far as I can see.<ref>{{cite news
|first=Larry
|first=Larry
|last=Sanger
|last=Sanger
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}}</ref> </blockquote>
}}</ref> </blockquote>


Wikipedia was formally launched on [[15 January]] [[2001]], as a single English-language edition at wikipedia.com, and announced by Sanger on the Nupedia mailing list.<ref>{{cite news
Wikipedia was formally launched on [[January 15]], [[2001]], as a single English-language edition at http://www.wikipedia.com, and announced by Sanger on the Nupedia mailing list.<ref>{{cite news
|first=Larry
|first=Larry
|last=Sanger
|last=Sanger
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|publisher=Internet Archive
|publisher=Internet Archive
|url=http://web.archive.org/web/20010506042824/www.nupedia.com/pipermail/nupedia-l/2001-January/000684.html
|url=http://web.archive.org/web/20010506042824/www.nupedia.com/pipermail/nupedia-l/2001-January/000684.html
}}</ref> It had been, from [[10 January]], a feature of Nupedia.com in which the public could write articles that could be incorporated into Nupedia after review. It was relaunched off-site after Nupedia's Advisory Board of subject experts disapproved of its production model.<ref name=SangerMemoir>{{cite news | last=Sanger | first=Larry | title=The Early History of Nupedia and Wikipedia: A Memoir | date=18 April 2005 | publisher=Slashdot | url=http://features.slashdot.org/features/05/04/18/164213.shtml}}</ref> Wikipedia thereafter operated as a standalone project without control from Nupedia. Its policy of "neutral point-of-view" was codified in its initial months, though it is similar to Nupedia's earlier "nonbias" policy. There were otherwise few rules initially. Wikipedia gained early contributors from Nupedia, [[Slashdot]] postings, and [[search engine]] indexing. It grew to approximately 20,000 articles among 18 language editions by the end of its first year. It had 26 language editions by the end of 2002, 46 by the end of 2003, and 161 by the end of 2004.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Multilingual_statistics Multilingual statistics]", Wikipedia, [[30 March]] [[2005]]</ref> Nupedia and Wikipedia coexisted until the former's servers went down, permanently, in 2003, and its text was incorporated into Wikipedia.
}}</ref> It had been, from January 10, a feature of Nupedia.com in which the public could write articles that could be incorporated into Nupedia after review. It was relaunched off-site after Nupedia's Advisory Board of subject experts disapproved of its production model.<ref name=SangerMemoir>{{cite news | last=Sanger | first=Larry | title=The Early History of Nupedia and Wikipedia: A Memoir | date=April 18, 2005 | publisher=Slashdot | url=http://features.slashdot.org/features/05/04/18/164213.shtml}}</ref> Wikipedia thereafter operated as a standalone project without control from Nupedia. Its policy of "neutral point-of-view" was codified in its initial months, though it is similar to Nupedia's earlier "nonbias" policy. There were otherwise few rules initially. Wikipedia gained early contributors from Nupedia, [[Slashdot]] postings, and [[search engine]] indexing. It grew to approximately 20,000 articles, and 18 language editions, by the end of its first year. It had 26 language editions by the end of 2002, 46 by the end of 2003, and 161 by the end of 2004.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Multilingual_statistics Multilingual statistics]", Wikipedia, [[March 30]], [[2005]]</ref> Nupedia and Wikipedia coexisted until the former's servers went down, permanently, in 2003, and its text was incorporated into Wikipedia.
[[Image:WikipediaHomePage30March200.png|thumb|300px|right|Wikipedia's English edition on [[March 30]], [[2001]], two and a half months after its founding.]]


Wales and Sanger attribute the concept of using a wiki to [[Ward Cunningham]]'s WikiWikiWeb or [[Portland Pattern Repository]]. Wales mentioned that he heard the concept first from Jeremy Rosenfeld, an employee of Bomis who showed him the same wiki, in December 2000,<ref>Jimmy Wales, "[http://mail.wikipedia.org/pipermail/wikipedia-l/2005-April/039093.html Re: Sanger's memoirs]", [[20 April]] [[2005]],<wikipedia-l@wikipedia.org></ref> but it was after Sanger heard of its existence from Ben Kovitz, a regular at this wiki, in January 2001,<ref name=SangerMemoir/> and proposed a creation of a wiki for Nupedia to Wales that Wikipedia's history started. Under a similar concept of free content, though not wiki production, the [[GNUPedia]] project existed alongside Nupedia early in its history. It subsequently became inactive and its creator, [[free software|free-software]] figure [[Richard Stallman]], lent his support to Wikipedia.<ref>{{cite news | last=Stallman | first=Richard | title=The Free Encyclopedia Project | date=1999 | publisher=Free Software Foundation | url=http://www.gnu.org/encyclopedia/encyclopedia.html}}</ref>
Wales and Sanger attribute the concept of using a wiki to [[Ward Cunningham]]'s WikiWikiWeb or [[Portland Pattern Repository]]. Wales mentioned that he heard the concept first from Jeremy Rosenfeld, an employee of Bomis who showed him the same wiki, in December 2000,<ref>Jimmy Wales, "[http://mail.wikipedia.org/pipermail/wikipedia-l/2005-April/039093.html Re: Sanger's memoirs]", [[April 20]], [[2005]],<wikipedia-l@wikipedia.org></ref> but it was after Sanger heard of its existence in January 2001 from Ben Kovitz, a regular at the wiki,<ref name=SangerMemoir/> that he proposed the creation of a wiki for Nupedia to Wales and Wikipedia's history started. Under a similar concept of free content, though not wiki-based production, the [[GNUpedia]] project existed alongside Nupedia early in its history. It subsequently became inactive, and its creator, [[free software|free-software]] figure [[Richard Stallman]], lent his support to Wikipedia.<ref>{{cite news | last=Stallman | first=Richard | title=The Free Encyclopedia Project | date=1999 | publisher=Free Software Foundation | url=http://www.gnu.org/encyclopedia/encyclopedia.html}}</ref>


Citing fear of commercial advertising and lack of control in a perceived English-centric Wikipedia, users of the [[Spanish Wikipedia]] forked from Wikipedia to create the ''[[Enciclopedia Libre]]'' in February 2002. Later that year, Wales announced that Wikipedia would not display [[advertising|advertisements]], and moved its website to wikipedia.org. Projects have since forked from Wikipedia's content for editorial reasons, such as [[Wikinfo]], which abandoned "neutral point-of-view" in favor of multiple complementary articles written from a "sympathetic point-of-view".
Citing fears of commercial advertising and lack of control in a perceived English-centric Wikipedia, users of the [[Spanish Wikipedia]] forked from Wikipedia to create the ''[[Enciclopedia Libre]]'' in February 2002. Later that year, Wales announced that Wikipedia would not display [[advertising|advertisements]], and its website was moved to wikipedia.org. Various other projects have since forked from Wikipedia for editorial reasons, such as [[Wikinfo]], which abandoned "neutral point-of-view" in favor of multiple complementary articles written from a "sympathetic point-of-view".


From Wikipedia and Nupedia, the Wikimedia Foundation was created on [[June 20]] [[2003]].<ref>Jimmy Wales: "[http://mail.wikipedia.org/pipermail/wikipedia-l/2003-June/010690.html Announcing Wikimedia Foundation]", [[20 June]] [[2003]], <wikipedia-l@wikipedia.org></ref> Wikipedia and its sister projects thereafter operated under this [[non-profit organization]]. Wikipedia's first sister project, "In Memoriam: September 11<!--DO NOT REFORMAT THIS DATE, IT IS IN QUOTATIONS--> Wiki" had been created in October 2002 to detail the [[September 11, 2001 attacks]]; [[Wiktionary]], a dictionary project, was launched in December 2002; [[Wikiquote]], a collection of quotes, a week after Wikimedia launched; and [[Wikibooks]], a collection of collaboratively-written free books, the next month. Wikimedia has since started a number of other projects, detailed below.
The Wikimedia Foundation was created from Wikipedia and Nupedia on [[June 20]], [[2003]].<ref>Jimmy Wales: "[http://mail.wikipedia.org/pipermail/wikipedia-l/2003-June/010690.html Announcing Wikimedia Foundation]", [[June 20]], [[2003]], <wikipedia-l@wikipedia.org></ref> Wikipedia and its sister projects thereafter operated under this [[non-profit organization]]. Wikipedia's first sister project, "In Memoriam: September 11<!--DO NOT REFORMAT THIS DATE, IT IS IN QUOTATIONS--> Wiki", had been created in October 2002 to detail the [[September 11, 2001 attacks]]; [[Wiktionary]], a dictionary project, was launched in December 2002; [[Wikiquote]], a collection of quotations, a week after Wikimedia launched; and [[Wikibooks]], a collection of collaboratively-written free books, the next month. Wikimedia has since started a number of other projects, detailed below.


Wikipedia has traditionally measured its status by article count. In its first two years, it grew at a few hundred or fewer new articles per day; by 2004, this had accelerated to 1,000 to 3,000 per day across all editions. The English Wikipedia reached a 100,000 article milestone on [[January 22]] [[2003]]<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Press_releases/January_2003 Wikipedia, the free encyclopedia, reaches its 100,000th article]", Wikimedia Foundation, [[January 21]] [[2003]]</ref>. Wikipedia reached its one millionth article among 105 language editions on [[September 20]], [[2004]],<ref>"[http://meta.wikimedia.org/wiki/Wikimedia_press_releases/One_million_Wikipedia_articles_(int'l) Wikipedia Reaches One Million Articles]", Wikimedia Foundation, [[20 September]] [[2004]]</ref> while the English edition alone reached its 500,000th on [[March 18]] [[2005]]<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Press_releases/March_2005 Wikipedia Publishes 500,000th English Article]", Wikimedia Foundation, [[March 18]] [[2005]]</ref>. Less than a year later the figure had doubled, with the millionth article in the English edition created on [[March 1]] [[2006]]<ref>"[http://wikimediafoundation.org/wiki/Press_releases/English_Wikipedia_Publishes_Millionth_Article English Wikipedia Publishes Millionth Article]", Wikimedia Foundation, [[March 1]] [[2006]]</ref>; meanwhile, the millionth user registration had been made just 2 days before.
Wikipedia has traditionally measured its status by article count. In its first two years, it grew at a few hundred or fewer new articles per day; by 2004, this had accelerated to a total of 1,000 to 3,000 per day (counting all editions). The English Wikipedia reached its 100,000-article milestone on [[January 22]], [[2003]]<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Press_releases/January_2003 Wikipedia, the free encyclopedia, reaches its 100,000th article]", Wikimedia Foundation, [[January 21]], [[2003]]</ref>. Wikipedia reached its one millionth article, among the 105 language editions that existed at the time, on [[September 20]], [[2004]],<ref>"[http://meta.wikimedia.org/wiki/Wikimedia_press_releases/One_million_Wikipedia_articles_(int'l) Wikipedia Reaches One Million Articles]", Wikimedia Foundation, [[September 20]], [[2004]]</ref> while the English edition alone reached its 500,000th on [[March 18]], [[2005]].<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Press_releases/March_2005 Wikipedia Publishes 500,000th English Article]", Wikimedia Foundation, [[March 18]], [[2005]]</ref> This figure had doubled less than a year later, with the millionth article in the English edition being created on [[March 1]], [[2006]]<ref>"[http://wikimediafoundation.org/wiki/Press_releases/English_Wikipedia_Publishes_Millionth_Article English Wikipedia Publishes Millionth Article]", Wikimedia Foundation, [[March 1]], [[2006]]</ref>; meanwhile, the millionth user registration had been made just 2 days before.


The Wikimedia Foundation applied to the [[United States Patent and Trademark Office]] to [[trademark]] ''Wikipedia®'' on [[September 17]] [[2004]]. The mark was granted registration status on [[January 10]], [[2006]]. Trademark protection was accorded by [[Japan]] on [[December 16]] [[2004]] and in the [[European Union]] on [[January 20]] [[2005]]. Technically a [[servicemark]], the scope of the mark is for: "Provision of [[information]] in the field of general encyclopedic knowledge via the [[Internet]]".
The Wikimedia Foundation applied to the [[United States Patent and Trademark Office]] to [[trademark]] ''Wikipedia®'' on [[September 17]], [[2004]]. The mark was granted registration status on [[January 10]], [[2006]]. Trademark protection was accorded by [[Japan]] on [[December 16]], [[2004]] and in the [[European Union]] on [[January 20]], [[2005]]. Technically a [[service mark]], the scope of the mark is for: "Provision of [[information]] in the field of general encyclopedic knowledge via the [[Internet]]".


There are currently plans to license the usage of the Wikipedia trademark for some products like [[book]]s or [[DVD]]s.<ref>{{cite news
There are currently plans to license the usage of the Wikipedia trademark for some products, such as books or DVDs.<ref>{{cite news
|first=Vipin
|first=Vipin
|last=Nair
|last=Nair
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|publisher=Business Line
|publisher=Business Line
|url=http://www.thehindubusinessline.com/ew/2005/12/05/stories/2005120500070100.htm
|url=http://www.thehindubusinessline.com/ew/2005/12/05/stories/2005120500070100.htm
}}</ref> The [[German Wikipedia]] will be printed in its entirety by Directmedia, in 100 volumes of 800 pages each. Publication will begin in October 2006 and finish in 2010.
}}</ref> The [[German Wikipedia]] will be printed in its entirety by Directmedia, in 100 volumes of 800 pages each, beginning in October 2006, and publishing will finish in 2010.


==Software and hardware==
==Software and hardware==
[[Image:Floridaserversfront1.jpg|300px|thumb|right|Wikipedia receives over 2000 page views per second. More than 100 servers have been set up to handle the traffic.]]
[[Image:Floridaserversfront1.jpg|250px|thumb|left|Wikipedia receives over 2000 page views per second. More than 100 servers have been set up to handle the traffic.]]
[[Image:Wikimedia-servers.jpg|300px|thumb|right|Some Wikimedia servers]]


Wikipedia is run by [[MediaWiki]]<!--for version see [[Special:Version]]--> [[free software]] on a cluster of dedicated servers located in [[Florida]] and four other locations around the world. MediaWiki is Phase III of the program's software. Originally, Wikipedia ran on [[UseModWiki]] by [[Clifford Adams]] (Phase I). At first it required [[CamelCase]] for links; later it was also possible to use double brackets. Wikipedia began running on a [[PHP]] [[wiki software|wiki engine]] with a [[MySQL]] [[database]] in January 2002. This software, Phase II, was written specifically for the Wikipedia project by Magnus Manske. Several rounds of modifications were made to improve performance in response to increased demand. Ultimately, the software was rewritten again, this time by Lee Daniel Crocker. Instituted in July 2002, this Phase III software was called MediaWiki. It was licensed under the [[GNU General Public License]] and used by all Wikimedia projects.
Wikipedia is run by [[MediaWiki]]<!--for version see [[Special:Version]]--> [[free software]] on a cluster of dedicated servers located in [[Florida]] and four other locations around the world. MediaWiki is Phase III of the program's software. Originally, Wikipedia ran on [[UseModWiki]] by [[Clifford Adams]] (Phase I). At first it required [[CamelCase]] for links; later it was also possible to use double brackets. Wikipedia began running on a [[PHP]] [[wiki software|wiki engine]] with a [[MySQL]] [[database]] in January 2002. This software, Phase II, was written specifically for the Wikipedia project by Magnus Manske. Several rounds of modifications were made to improve performance in response to increased demand. Ultimately, the software was rewritten again, this time by Lee Daniel Crocker. Instituted in July 2002, this Phase III software was called MediaWiki. It was licensed under the [[GNU General Public License]] and used by all Wikimedia projects.

[[Image:Wikimedia-servers.jpg|200px|thumb|right|Some Wikimedia servers.]]

Wikipedia was served from a single server until 2003, when the server setup was expanded into a distributed [[multitier architecture]]. In January 2005, the project ran on 39 dedicated servers located in [[Florida]]. This configuration included a single master database server running [[MySQL]], multiple slave database servers, 21 web servers running the [[Apache HTTP Server|Apache]] software, and seven [[Squid cache]] servers. By September 2005, its server cluster had grown to around 100 servers in four locations around the world.
Wikipedia was served from a single server until 2003, when the server setup was expanded into a distributed [[multitier architecture]]. In January 2005, the project ran on 39 dedicated servers located in [[Florida]]. This configuration included a single master database server running [[MySQL]], multiple slave database servers, 21 web servers running the [[Apache HTTP Server|Apache]] software, and seven [[Squid cache]] servers. By September 2005, its server cluster had grown to around 100 servers in four locations around the world.

Page requests are processed by first passing to a front-end layer of [[Squid cache|Squid caching]] servers. Requests that cannot be served from the Squid cache are sent to two load-balancing servers running the [[Perlbal]] software, which then pass the request to one of the Apache web servers for page-rendering from the database. The web servers serve pages as requested, performing page rendering for all the Wikipedias. To increase speed further, rendered pages for anonymous users are cached in a filesystem until invalidated, allowing page rendering to be skipped entirely for most common page accesses. Wikimedia has begun building a global network of [[Squid cache|caching servers]] with the addition of three such servers in [[France]]. A new Dutch cluster is also online now. In spite of all this, Wikipedia page load times remain quite variable. The ongoing status of Wikipedia's website is posted by users at a [http://openfacts.berlios.de/index-en.phtml?title=Wikipedia_Status status page] on [[OpenFacts]].
Page requests are processed by first passing to a front-end layer of [[Squid cache|Squid caching]] servers. Requests that cannot be served from the Squid cache are sent to two load-balancing servers running the [[Perlbal]] software, which then pass the request to one of the Apache web servers for page-rendering from the database. The web servers serve pages as requested, performing page rendering for all the Wikipedias. To increase speed further, rendered pages for anonymous users are cached in a filesystem until invalidated, allowing page rendering to be skipped entirely for most common page accesses. Wikimedia has begun building a global network of [[Squid cache|caching servers]] with the addition of three such servers in [[France]]. A new Dutch cluster is also online now. In spite of all this, Wikipedia page load times remain quite variable. The ongoing status of Wikipedia's website is posted by users at a [http://openfacts.berlios.de/index-en.phtml?title=Wikipedia_Status status page] on [[OpenFacts]].


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Wikipedia has been criticized for a perceived lack of reliability, comprehensiveness, and authority. It is considered to have no or limited utility as a [[reference work]] among many [[librarian]]s, [[Academia|academic]]s, and the [[editor]]s of more formally written encyclopedias. A website called Wikipedia Watch has been created to denounce Wikipedia as having "…a massive, unearned influence on what passes for reliable information." <ref>Brandt, Daniel/PIR. Wikipedia Watch <nowiki>&#104;ttp://www.wikipedia-watch.org/</nowiki>, accessed April 2006.</ref>
Wikipedia has been criticized for a perceived lack of reliability, comprehensiveness, and authority. It is considered to have no or limited utility as a [[reference work]] among many [[librarian]]s, [[Academia|academic]]s, and the [[editor]]s of more formally written encyclopedias. A website called Wikipedia Watch has been created to denounce Wikipedia as having "…a massive, unearned influence on what passes for reliable information." <ref>Brandt, Daniel/PIR. Wikipedia Watch <nowiki>&#104;ttp://www.wikipedia-watch.org/</nowiki>, accessed April 2006.</ref>


Some argue that allowing anyone to edit makes Wikipedia an unreliable work. Wikipedia contains no formal [[peer review]] process for fact-checking, and the editors themselves may not be well-versed in the topics they write about. In a 2004 interview with ''[[The Guardian]]'', librarian Philip Bradley said that he would not use Wikipedia and is "not aware of a single librarian who would. The main problem is the lack of authority. With printed publications, the publishers have to ensure that their data are reliable, as their livelihood depends on it. But with something like this, all that goes out the window" (Waldman, 2004). Similarly, ''Encyclopædia Britannica'''s executive editor, Ted Pappas, was quoted in ''[[The Guardian]]'' as saying: "The premise of Wikipedia is that continuous improvement will lead to perfection. That premise is completely unproven."<ref name="Who">Simon Waldman, "[http://www.guardian.co.uk/online/news/0,12597,1335892,00.html Who knows?]", ''[[The Guardian]]'', [[26 October]] [[2004]].</ref> On [[October 24]], [[2005]], ''[[The Guardian]]'' published an article [http://technology.guardian.co.uk/opinion/story/0,16541,1599325,00.html "Can you trust Wikipedia?"] where a group of experts critically reviewed entries for their fields. Discussing Wikipedia as an academic source, [[Danah Boyd]] said in 2005 that "[i]t will never be an encyclopedia, but it will contain extensive knowledge that is quite valuable for different purposes".<ref>Danah Boyd, "[http://www.corante.com/many/archives/2005/01/04/academia_and_wikipedia.php Academia and Wikipedia]", [[Many-to-Many]], [[4 January]] [[2005]].</ref>
Some argue that allowing anyone to edit makes Wikipedia an unreliable work. Wikipedia contains no formal [[peer review]] process for fact-checking, and the editors themselves may not be well-versed in the topics they write about. In a 2004 interview with ''[[The Guardian]]'', librarian Philip Bradley said that he would not use Wikipedia and is "not aware of a single librarian who would. The main problem is the lack of authority. With printed publications, the publishers have to ensure that their data are reliable, as their livelihood depends on it. But with something like this, all that goes out the window" (Waldman, 2004). Similarly, ''Encyclopædia Britannica'''s executive editor, Ted Pappas, was quoted in ''[[The Guardian]]'' as saying: "The premise of Wikipedia is that continuous improvement will lead to perfection. That premise is completely unproven."<ref name="Who">Simon Waldman, "[http://www.guardian.co.uk/online/news/0,12597,1335892,00.html Who knows?]", ''[[The Guardian]]'', [[October 26]], [[2004]].</ref> On [[October 24]], [[2005]], ''[[The Guardian]]'' published an article [http://technology.guardian.co.uk/opinion/story/0,16541,1599325,00.html "Can you trust Wikipedia?"] where a group of experts critically reviewed entries for their fields. Discussing Wikipedia as an academic source, [[Danah Boyd]] said in 2005 that "[i]t will never be an encyclopedia, but it will contain extensive knowledge that is quite valuable for different purposes".<ref>Danah Boyd, "[http://www.corante.com/many/archives/2005/01/04/academia_and_wikipedia.php Academia and Wikipedia]", [[Many-to-Many]], [[January 4]], [[2005]].</ref>
[[Image:Be bold.png|thumb|'''[[WP:BOLD|Be Bold]]''' has become the unofficial slogan of Wikipedia.]]
[[Image:Be bold.png|thumb|'''[[WP:BOLD|Be Bold]]''' has become the unofficial slogan of Wikipedia.]]
Academic circles have not been exclusively dismissive of Wikipedia as a reference. Wikipedia articles have been referenced in "enhanced perspectives" provided on-line in ''Science''. The first of these perspectives to provide a hyperlink to Wikipedia was "A White Collar Protein Senses Blue Light" (Linden, 2002), and dozens of enhanced perspectives have provided such links since then. However, these links are offered as background sources for the reader, not as sources used by the writer, and the "enhanced perspectives" are not intended to serve as reference material themselves.
Academic circles have not been exclusively dismissive of Wikipedia as a reference. Wikipedia articles have been referenced in "enhanced perspectives" provided on-line in ''Science''. The first of these perspectives to provide a hyperlink to Wikipedia was "A White Collar Protein Senses Blue Light" (Linden, 2002), and dozens of enhanced perspectives have provided such links since then. However, these links are offered as background sources for the reader, not as sources used by the writer, and the "enhanced perspectives" are not intended to serve as reference material themselves.
Line 164: Line 168:
In a 2004 piece called "The Faith-Based Encyclopedia," former ''Britannica'' editor [[Robert McHenry]] criticized the wiki approach, writing,
In a 2004 piece called "The Faith-Based Encyclopedia," former ''Britannica'' editor [[Robert McHenry]] criticized the wiki approach, writing,
<blockquote>
<blockquote>
[h]owever closely a Wikipedia article may at some point in its life attain to reliability, it is forever open to the uninformed or semiliterate meddler… The user who visits Wikipedia to learn about some subject, to confirm some matter of fact, is rather in the position of a visitor to a public restroom. It may be obviously dirty, so that he knows to exercise great care, or it may seem fairly clean, so that he may be lulled into a false sense of security. What he certainly does not know is who has used the facilities before him.<ref>[[Robert McHenry]], "[http://www.techcentralstation.com/111504A.html The Faith-Based Encyclopedia]", [[Tech Central Station]], [[15 November]] [[2004]].</ref>
[h]owever closely a Wikipedia article may at some point in its life attain to reliability, it is forever open to the uninformed or semiliterate meddler… The user who visits Wikipedia to learn about some subject, to confirm some matter of fact, is rather in the position of a visitor to a public restroom. It may be obviously dirty, so that he knows to exercise great care, or it may seem fairly clean, so that he may be lulled into a false sense of security. What he certainly does not know is who has used the facilities before him.<ref>[[Robert McHenry]], "[http://www.techcentralstation.com/111504A.html The Faith-Based Encyclopedia]", [[Tech Central Station]], [[November 15]], [[2004]].</ref>
</blockquote>
</blockquote>
In response to this criticism, proposals have been made to provide various forms of provenance for material in Wikipedia articles; see for example [[Wikipedia:Provenance]]. The idea is to provide ''source provenance'' on each interval of text in an article and ''temporal provenance'' as to its vintage. In this way a reader can know "who has used the facilities before him" and how long the community has had to process the information in an article to provide calibration on the "sense of security." However, these proposals for provenance are quite controversial (see [[Wikipedia talk:Provenance]]). Aaron Krowne wrote a rebuttal article in which he criticized McHenry's methods, and labeled them "[[FUD]]," the marketing technique of "fear, uncertainty, and doubt."<ref>Aaron Krowne, "[http://www.freesoftwaremagazine.com/free_issues/issue_02/fud_based_encyclopedia/ The FUD-based Encyclopedia]", [[Free Software Magazine]], [[1 March]] [[2005]].</ref>
In response to this criticism, proposals have been made to provide various forms of provenance for material in Wikipedia articles; see for example [[Wikipedia:Provenance]]. The idea is to provide ''source provenance'' on each interval of text in an article and ''temporal provenance'' as to its vintage. In this way a reader can know "who has used the facilities before him" and how long the community has had to process the information in an article to provide calibration on the "sense of security." However, these proposals for provenance are quite controversial (see [[Wikipedia talk:Provenance]]). Aaron Krowne wrote a rebuttal article in which he criticized McHenry's methods, and labeled them "[[FUD]]," the marketing technique of "fear, uncertainty, and doubt."<ref>Aaron Krowne, "[http://www.freesoftwaremagazine.com/free_issues/issue_02/fud_based_encyclopedia/ The FUD-based Encyclopedia]", [[Free Software Magazine]], [[March 1]], [[2005]].</ref>


Former [[Nupedia]] editor-in-chief [[Larry Sanger]] criticized Wikipedia in late 2004 for having, according to Sanger, an "anti-elitist" philosophy of active contempt for expertise.<ref name="SangerElitism">Larry Sanger, "[http://www.kuro5hin.org/story/2004/12/30/142458/25 Why Wikipedia Must Jettison Its Anti-Elitism]", [[Kuro5hin]], [[31 December]] [[2004]].</ref>
Former [[Nupedia]] editor-in-chief [[Larry Sanger]] criticized Wikipedia in late 2004 for having, according to Sanger, an "anti-elitist" philosophy of active contempt for expertise.<ref name="SangerElitism">Larry Sanger, "[http://www.kuro5hin.org/story/2004/12/30/142458/25 Why Wikipedia Must Jettison Its Anti-Elitism]", [[Kuro5hin]], [[December 31]], [[2004]].</ref>


Wikipedia's editing process assumes that exposing an article to many users will result in accuracy. Referencing [[Linus's law|Linus' law]] of open-source development, Sanger stated earlier: "Given enough eyeballs, all errors are shallow."<ref>Larry Sanger, "[http://www.kuro5hin.org/story/2001/9/24/43858/2479 Wikipedia is wide open. Why is it growing so fast? Why isn't it full of nonsense?]", Kuro5hin, [[24 September]] [[2001]].</ref> Technology figure [[Joi Ito]] wrote on Wikipedia's authority, "[a]lthough it depends a bit on the field, the question is whether something is more likely to be true coming from a source whose resume sounds authoritative or a source that has been viewed by hundreds of thousands of people (with the ability to comment) and has survived."<ref>[[Joi Ito]], "[http://joi.ito.com/archives/2004/08/29/wikipedia_attacked_by_ignorant_reporter.html#c014592 Wikipedia attacked by ignorant reporter]", Joi Ito's Web, [[29 August]] [[2004]].</ref> Conversely, in an informal test of Wikipedia's ability to detect misinformation, its author remarked that its process "isn't really a fact-checking mechanism so much as a voting mechanism", and that material which did not appear "blatantly false" may be accepted as true.<ref>Anonymous [[blog]]ger, "[http://www.frozennorth.org/C2011481421/E652809545/ How Authoritative is Wikipedia]", Dispatches from the Frozen North, [[4 September]] [[2004]].</ref>
Wikipedia's editing process assumes that exposing an article to many users will result in accuracy. Referencing [[Linus's law|Linus' law]] of open-source development, Sanger stated earlier: "Given enough eyeballs, all errors are shallow."<ref>Larry Sanger, "[http://www.kuro5hin.org/story/2001/9/24/43858/2479 Wikipedia is wide open. Why is it growing so fast? Why isn't it full of nonsense?]", Kuro5hin, [[September 24]], [[2001]].</ref> Technology figure [[Joi Ito]] wrote on Wikipedia's authority, "[a]lthough it depends a bit on the field, the question is whether something is more likely to be true coming from a source whose resume sounds authoritative or a source that has been viewed by hundreds of thousands of people (with the ability to comment) and has survived."<ref>[[Joi Ito]], "[http://joi.ito.com/archives/2004/08/29/wikipedia_attacked_by_ignorant_reporter.html#c014592 Wikipedia attacked by ignorant reporter]", Joi Ito's Web, [[August 29]], [[2004]].</ref> Conversely, in an informal test of Wikipedia's ability to detect misinformation, its author remarked that its process "isn't really a fact-checking mechanism so much as a voting mechanism", and that material which did not appear "blatantly false" may be accepted as true.<ref>Anonymous [[blog]]ger, "[http://www.frozennorth.org/C2011481421/E652809545/ How Authoritative is Wikipedia]", Dispatches from the Frozen North, [[September 4]], [[2004]].</ref>


Wikipedia has been accused of deficiencies in comprehensiveness because of its voluntary nature, and of reflecting the systemic biases of its contributors. ''Encyclopædia Britannica'' editor-in-chief Dale Hoiberg has argued that "people write of things they're interested in, and so many subjects don't get covered; and news events get covered in great detail. The entry on [[Hurricane Frances]] was five times the length of that on [[Chinese art]], and the entry on ''[[Coronation Street]]'' was twice as long as the article on [[Tony Blair]]."<ref name="Who" /> (As of December 2005, this is no longer the case.) Former Nupedia editor-in-chief Larry Sanger stated in 2004, "when it comes to relatively specialized topics (outside of the interests of most of the contributors), the project's credibility is very uneven."<ref name="SangerElitism" />
Wikipedia has been accused of deficiencies in comprehensiveness because of its voluntary nature, and of reflecting the systemic biases of its contributors. ''Encyclopædia Britannica'' editor-in-chief Dale Hoiberg has argued that "people write of things they're interested in, and so many subjects don't get covered; and news events get covered in great detail. The entry on [[Hurricane Frances]] was five times the length of that on [[Chinese art]], and the entry on ''[[Coronation Street]]'' was twice as long as the article on [[Tony Blair]]."<ref name="Who" /> (As of December 2005, this is no longer the case.) Former Nupedia editor-in-chief Larry Sanger stated in 2004, "when it comes to relatively specialized topics (outside of the interests of most of the contributors), the project's credibility is very uneven."<ref name="SangerElitism" />
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The English-language website also suffers from frequent timeouts, server errors and occasional [[downtime]] due to heavy user traffic. These problems have had a negative impact on Wikipedia's desired image as a fast and reliable source of information.
The English-language website also suffers from frequent timeouts, server errors and occasional [[downtime]] due to heavy user traffic. These problems have had a negative impact on Wikipedia's desired image as a fast and reliable source of information.


It has been praised for, as a wiki, allowing articles to be updated or created in response to current events. For example, the then-new article on the [[2004 Indian Ocean earthquake]] on its English edition was cited often by the press shortly after the incident. Its editors have also argued that, as a website, Wikipedia is able to include articles on a greater number of subjects than print encyclopedias may.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Replies_to_common_objections Wikipedia:Replies to common objections]", Wikipedia, 22:53 [[13 April]] [[2005]].</ref>
It has been praised for, as a wiki, allowing articles to be updated or created in response to current events. For example, the then-new article on the [[2004 Indian Ocean earthquake]] on its English edition was cited often by the press shortly after the incident. Its editors have also argued that, as a website, Wikipedia is able to include articles on a greater number of subjects than print encyclopedias may.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Replies_to_common_objections Wikipedia:Replies to common objections]", Wikipedia, 22:53 [[April 13]], [[2005]].</ref>


[[Microsoft Encarta]] has started to solicit comments from readers in attempt to improve the accuracy and timeliness of its encyclopedia. [http://encarta.msn.com/encnet/support/encartafeedback.aspx Encarta Feedback] allows any user to propose revisions for review by their staff.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_Signpost/2005-04-11/Encarta_editing Wikipedia:Wikipedia Signpost/2005-04-11/Encarta editing]", Wikipedia, [[11 April]] [[2005]].</ref>
[[Microsoft Encarta]] has started to solicit comments from readers in attempt to improve the accuracy and timeliness of its encyclopedia. [http://encarta.msn.com/encnet/support/encartafeedback.aspx Encarta Feedback] allows any user to propose revisions for review by their staff.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_Signpost/2005-04-11/Encarta_editing Wikipedia:Wikipedia Signpost/2005-04-11/Encarta editing]", Wikipedia, [[April 11]], [[2005]].</ref>


The German computing magazine ''c't'' performed a comparison of ''[[Brockhaus Multimedial premium|Brockhaus Multimedial]]'', ''[[Encarta|Microsoft Encarta]]'', and Wikipedia in October 2004: Experts evaluated 66 articles in various fields. In overall score, Wikipedia was rated 3.6 out of 5 points ("B-"), ''Brockhaus Premium'' 3.3, and ''Microsoft Encarta'' 3.1.<ref>Michael Kurzidim: Wissenswettstreit. Die kostenlose Wikipedia tritt gegen die Marktführer Encarta und Brockhaus an, in: [[c't]] 21/2004, [[4 October]] [[2004]], S. 132-139.</ref> In an analysis of online encyclopedias, [[Indiana University system|Indiana University]] professors Emigh and Herring wrote that "Wikipedia improves on traditional information sources, especially for the content areas in which it is strong, such as technology and current events."<ref>William Emigh and Susan C. Herring, "[http://ella.slis.indiana.edu/~herring/wiki.pdf Collaborative Authoring on the Web: A Genre Analysis of Online Encyclopedias]", paper presented at the 39th Hawaii International Conference on System Sciences, 2004.</ref>. The [[journal]] [[Nature (journal)|Nature]] reported in 2005 that [[science]] articles in Wikipedia were comparable in accuracy to those in Encyclopedia Britannica. Wikipedia had an average of four mistakes per article; Britannica contained three. Of eight "serious errors" found — including misinterpretations of important concepts — four came from each source.<ref>{{cite news | title=Wikipedia survives research test | date=December 15, 2005 | work=BBC News | publisher=BBC | url=http://news.bbc.co.uk/2/hi/technology/4530930.stm}}</ref>. On March 24, 2006, Britannica provided a rebuttal labeling the study "fatally flawed". <ref>{{cite news | title=Journal Nature study "fatally flawed" says Britannica | date=March 24, 2006 | work=WikiNews | publisher=Wikipedia Foundation | url=http://en.wikinews.org/wiki/Journal_Nature_study_%27fatally_flawed%27%2C_says_Britannica}}</ref>.
The German computing magazine ''c't'' performed a comparison of ''[[Brockhaus Multimedial premium|Brockhaus Multimedial]]'', ''[[Encarta|Microsoft Encarta]]'', and Wikipedia in October 2004: Experts evaluated 66 articles in various fields. In overall score, Wikipedia was rated 3.6 out of 5 points ("B-"), ''Brockhaus Premium'' 3.3, and ''Microsoft Encarta'' 3.1.<ref>Michael Kurzidim: Wissenswettstreit. Die kostenlose Wikipedia tritt gegen die Marktführer Encarta und Brockhaus an, in: [[c't]] 21/2004, [[October 4]], [[2004]], S. 132-139.</ref> In an analysis of online encyclopedias, [[Indiana University system|Indiana University]] professors Emigh and Herring wrote that "Wikipedia improves on traditional information sources, especially for the content areas in which it is strong, such as technology and current events."<ref>William Emigh and Susan C. Herring, "[http://ella.slis.indiana.edu/~herring/wiki.pdf Collaborative Authoring on the Web: A Genre Analysis of Online Encyclopedias]", paper presented at the 39th Hawaii International Conference on System Sciences, 2004.</ref>. The [[journal]] [[Nature (journal)|Nature]] reported in 2005 that [[science]] articles in Wikipedia were comparable in accuracy to those in Encyclopedia Britannica. Wikipedia had an average of four mistakes per article; Britannica contained three. Of eight "serious errors" found — including misinterpretations of important concepts — four came from each source.<ref>{{cite news | title=Wikipedia survives research test | date=December 15, 2005 | work=BBC News | publisher=BBC | url=http://news.bbc.co.uk/2/hi/technology/4530930.stm}}</ref>. On March 24, 2006, Britannica provided a rebuttal labeling the study "fatally flawed". <ref>{{cite news | title=Journal Nature study "fatally flawed" says Britannica | date=March 24, 2006 | work=WikiNews | publisher=Wikipedia Foundation | url=http://en.wikinews.org/wiki/Journal_Nature_study_%27fatally_flawed%27%2C_says_Britannica}}</ref>.


At the end of 2005, [[John Seigenthaler Sr. Wikipedia biography controversy|controversy erupted]] after journalist [[John Seigenthaler Sr.]] found that his biography had been written largely as a hoax about Seigenthaler. This led to the decision to restrict the ability to start articles to registered users.
At the end of 2005, [[John Seigenthaler Sr. Wikipedia biography controversy|controversy erupted]] after journalist [[John Seigenthaler Sr.]] found that his biography had been written largely as a hoax about Seigenthaler. This led to the decision to restrict the ability to start articles to registered users.


===Community===
===Community===
The [http://meta.wikimedia.org/wiki/The_Wikipedia_Community Wikipedia community] consists of users who are proportionally few, but highly active. Emigh and Herring argue that "a few active users, when acting in concert with established norms within an open editing system, can achieve ultimate control over the content produced within the system, literally erasing diversity, controversy, and inconsistency, and homogenizing contributors' voices." Editors on [[Wikinfo]], a [[fork (computing)|fork]] of Wikipedia, similarly argue that new or controversial editors to Wikipedia are often unjustly labeled "[[Internet troll|troll]]s" or "problem users" and blocked from editing.<ref>"[http://www.wikinfo.org/wiki.php?title=Critical_views_of_Wikipedia Critical views of Wikipedia]", [[Wikinfo]], 07:28 [[30 March]] [[2005]].</ref> Its community has also been criticized for responding to complaints regarding an article's quality by advising the complainer to fix the article.<ref>Andrew Orlowski, "[http://www.theregister.co.uk/2004/07/23/wiki_fiddlers_big_book/ Wiki-fiddlers defend Clever Big Book]", [[The Register]], [[23 July]] [[2004]].</ref>
The [http://meta.wikimedia.org/wiki/The_Wikipedia_Community Wikipedia community] consists of users who are proportionally few, but highly active. Emigh and Herring argue that "a few active users, when acting in concert with established norms within an open editing system, can achieve ultimate control over the content produced within the system, literally erasing diversity, controversy, and inconsistency, and homogenizing contributors' voices." Editors on [[Wikinfo]], a [[fork (computing)|fork]] of Wikipedia, similarly argue that new or controversial editors to Wikipedia are often unjustly labeled "[[Internet troll|troll]]s" or "problem users" and blocked from editing.<ref>"[http://www.wikinfo.org/wiki.php?title=Critical_views_of_Wikipedia Critical views of Wikipedia]", [[Wikinfo]], 07:28 [[March 30]], [[2005]].</ref> Its community has also been criticized for responding to complaints regarding an article's quality by advising the complainer to fix the article.<ref>Andrew Orlowski, "[http://www.theregister.co.uk/2004/07/23/wiki_fiddlers_big_book/ Wiki-fiddlers defend Clever Big Book]", [[The Register]], [[July 23]], [[2004]].</ref>


In a page on researching with Wikipedia, its authors argue that Wikipedia is valuable for being a social community. That is, authors can be asked to defend or clarify their work, and disputes are readily seen.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Researching_with_Wikipedia Wikipedia:Researching with Wikipedia]", Wikipedia ([[28 March]] [[2005]]).</ref> Wikipedia editions also often contain [[reference desk]]s in which the community answers questions.
In a page on researching with Wikipedia, its authors argue that Wikipedia is valuable for being a social community. That is, authors can be asked to defend or clarify their work, and disputes are readily seen.<ref>"[http://en.wikipedia.org/wiki/Wikipedia:Researching_with_Wikipedia Wikipedia:Researching with Wikipedia]", Wikipedia ([[March 28]], [[2005]]).</ref> Wikipedia editions also often contain [[reference desk]]s in which the community answers questions.


===Awards===
===Awards===
Wikipedia won two major awards in May 2004<ref>"[http://meta.wikimedia.org/wiki/Trophy_box Trophy Box]", Meta-Wiki ([[28 March]] [[2005]]).</ref>: The first was a Golden Nica for Digital Communities, awarded by [[Prix Ars Electronica]]; this came with a 10,000 [[euro]] grant and an invitation to present at the PAE Cyberarts Festival in [[Austria]] later that year. The second was a Judges' [[Webby Awards|Webby award]] for the "community" category. Wikipedia was also nominated for a "Best Practices" Webby. In September 2004, the [[Japanese Wikipedia]] was awarded a Web Creation Award from the Japan Advertisers Association. This award, normally given to individuals for great contributions to the Web in Japanese, was accepted by a long-standing contributor on behalf of the project.
Wikipedia won two major awards in May 2004<ref>"[http://meta.wikimedia.org/wiki/Trophy_box Trophy Box]", Meta-Wiki ([[March 28]], [[2005]]).</ref>: The first was a Golden Nica for Digital Communities, awarded by [[Prix Ars Electronica]]; this came with a 10,000 [[euro]] grant and an invitation to present at the PAE Cyberarts Festival in [[Austria]] later that year. The second was a Judges' [[Webby Awards|Webby award]] for the "community" category. Wikipedia was also nominated for a "Best Practices" Webby. In September 2004, the [[Japanese Wikipedia]] was awarded a Web Creation Award from the Japan Advertisers Association. This award, normally given to individuals for great contributions to the Web in Japanese, was accepted by a long-standing contributor on behalf of the project.
Wikipedia has received plaudits from sources including [[BBC News]], ''[[Washington Post]]'', ''[[The Economist]]'', ''[[Newsweek]]'', ''[[Los Angeles Times]]'', ''[[Science (journal)|Science]]'', ''[[The Guardian]]'', ''[[Chicago Sun-Times]]'', ''[[The Times]]'' (London), ''[[Toronto Star]]'', ''[[Globe and Mail]]'', ''[[The Financial Times]]'', ''[[Time Magazine]]'', ''[[Irish Times]]'', ''[[Reader's Digest]]'' and ''[[The Daily Telegraph]]''.
Wikipedia has received plaudits from sources including [[BBC News]], ''[[Washington Post]]'', ''[[The Economist]]'', ''[[Newsweek]]'', ''[[Los Angeles Times]]'', ''[[Science (journal)|Science]]'', ''[[The Guardian]]'', ''[[Chicago Sun-Times]]'', ''[[The Times]]'' (London), ''[[Toronto Star]]'', ''[[Globe and Mail]]'', ''[[The Financial Times]]'', ''[[Time Magazine]]'', ''[[Irish Times]]'', ''[[Reader's Digest]]'' and ''[[The Daily Telegraph]]''.


===Authors===
===Authors===
During December 2005, Wikipedia had about 27,000 users who made at least five edits that month; 17,000 of these active users worked on the English edition.<ref>Paragraph's statistics taken from "[http://en.wikipedia.org/wikistats/EN/TablesWikipediansEditsGt5.htm Active wikipedians]" (Wikipedia Statistics, [[13 April]] [[2006]]).</ref> A more active group of about 4,000 users made more than 100 edits per month, over half of these users having worked in the English edition. According to Wikimedia, one-quarter of Wikipedia's traffic comes from users without accounts, who are less likely to be editors.<ref>"[http://meta.wikimedia.org/wiki/Wikipedia Wikipedia]", Meta-Wiki, 08:02 [[30 March]] [[2005]].</ref>
During December 2005, Wikipedia had about 27,000 users who made at least five edits that month; 17,000 of these active users worked on the English edition.<ref>Paragraph's statistics taken from "[http://en.wikipedia.org/wikistats/EN/TablesWikipediansEditsGt5.htm Active wikipedians]" (Wikipedia Statistics, [[April 13]], [[2006]]).</ref> A more active group of about 4,000 users made more than 100 edits per month, over half of these users having worked in the English edition. According to Wikimedia, one-quarter of Wikipedia's traffic comes from users without accounts, who are less likely to be editors.<ref>"[http://meta.wikimedia.org/wiki/Wikipedia Wikipedia]", Meta-Wiki, 08:02 [[March 30]], [[2005]].</ref>


Maintenance tasks are performed by a group of volunteer developers, stewards, bureaucrats, and administrators, which number in the hundreds. Administrators are the largest such group, privileged with the ability to prevent articles from being edited, delete articles, or block users from editing in accordance with community policy. Many users have been temporarily or permanently blocked from editing Wikipedia. Vandalism or the minor infraction of policies may result in a warning or temporary block, while long-term or permanent blocks for prolonged and serious infractions are given by [[Jimmy Wales]] or, on its English edition, an elected Arbitration Committee.
Maintenance tasks are performed by a group of volunteer developers, stewards, bureaucrats, and administrators, which number in the hundreds. Administrators are the largest such group, privileged with the ability to prevent articles from being edited, delete articles, or block users from editing in accordance with community policy. Many users have been temporarily or permanently blocked from editing Wikipedia. Vandalism or the minor infraction of policies may result in a warning or temporary block, while long-term or permanent blocks for prolonged and serious infractions are given by [[Jimmy Wales]] or, on its English edition, an elected Arbitration Committee.


Former Nupedia editor-in-chief [[Larry Sanger]] has said that having the [[GFDL]] license as a "guarantee of freedom is a strong motivation to work on a free encyclopedia."<ref>[[Larry Sanger]], "[http://www.kuro5hin.org/story/2001/7/25/103136/121 Britannica or Nupedia? The Future of Free Encyclopedias]", [[Kuro5hin]], [[25 July]] [[2001]].</ref> In a study of Wikipedia as a community, Economics professor Andrea Ciffolilli argued that the low [[transaction cost]]s of participating in [[wiki]] software create a catalyst for collaborative development, and that a "creative construction" approach encourages participation.<ref>Andrea Ciffolilli, "[http://firstmonday.org/issues/issue8_12/ciffolilli/index.html Phantom authority, self-selective recruitment and retention of members in virtual communities: The case of Wikipedia]", [[First Monday (journal)|First Monday]] December 2003.</ref> Wikipedia has been viewed as a social experiment in [[anarchy (word)|anarchy]], [[democracy]], or [[communism]]. Its founder has replied that it is not intended as one, though that is a consequence.<ref>Jimmy Wales, "[http://mail.wikimedia.org/pipermail/wikien-l/2005-January/018735.html Re: Illegitimate block]", [[26 January]] [[2005]], <wikien-l@wikimedia.org>.</ref> Critics of Wikipedia have also viewed it as an [[oligarchy]] which is controlled primarily by its [[Wikipedia:Administrators|administrators]], [[Wikipedia:Stewards|stewards]], and [[Wikipedia:Bureaucrats|bureaucrats]], or simply by a small number of its contributors. [[Daniel Brandt]] of [[Wikipedia Watch]] has referred to [[User:Jimbo Wales|Jimbo Wales]] as the "[[dictator]]" of Wikipedia; however, most [[Wikipedia:Wikipedians|Wikipedia users]] do not consider Wales to be a dictator.
Former Nupedia editor-in-chief [[Larry Sanger]] has said that having the [[GFDL]] license as a "guarantee of freedom is a strong motivation to work on a free encyclopedia."<ref>[[Larry Sanger]], "[http://www.kuro5hin.org/story/2001/7/25/103136/121 Britannica or Nupedia? The Future of Free Encyclopedias]", [[Kuro5hin]], [[July 25]], [[2001]].</ref> In a study of Wikipedia as a community, Economics professor Andrea Ciffolilli argued that the low [[transaction cost]]s of participating in [[wiki]] software create a catalyst for collaborative development, and that a "creative construction" approach encourages participation.<ref>Andrea Ciffolilli, "[http://firstmonday.org/issues/issue8_12/ciffolilli/index.html Phantom authority, self-selective recruitment and retention of members in virtual communities: The case of Wikipedia]", [[First Monday (journal)|First Monday]] December 2003.</ref> Wikipedia has been viewed as a social experiment in [[anarchy (word)|anarchy]], [[democracy]], or [[communism]]. Its founder has replied that it is not intended as one, though that is a consequence.<ref>Jimmy Wales, "[http://mail.wikimedia.org/pipermail/wikien-l/2005-January/018735.html Re: Illegitimate block]", [[January 26]], [[2005]], <wikien-l@wikimedia.org>.</ref> Critics of Wikipedia have also viewed it as an [[oligarchy]] which is controlled primarily by its [[Wikipedia:Administrators|administrators]], [[Wikipedia:Stewards|stewards]], and [[Wikipedia:Bureaucrats|bureaucrats]], or simply by a small number of its contributors. [[Daniel Brandt]] of [[Wikipedia Watch]] has referred to [[User:Jimbo Wales|Jimbo Wales]] as the "[[dictator]]" of Wikipedia; however, most [[Wikipedia:Wikipedians|Wikipedia users]] do not consider Wales to be a dictator.


==Alternative spellings==
==Alternative spellings==
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*Vicipéid - [[:ga:|Irish]]
*Vicipéid - [[:ga:|Irish]]
*Vikipedio - [[:eo:|Esperanto]]
*Vikipedio - [[:eo:|Esperanto]]
*Vikipedi - [[:tr:|Turkish]]
*Vikipedi - [[:tr:|Turkish/Curdish/Turdish]]
*Vikipediya - [[:az:|Azerbaijani]]
*Vikipediya - [[:az:|Azerbaijani]]
*Vikipedija - [[:lt:|Lithuanian]]
*Vikipedija - [[:lt:|Lithuanian]]
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{{Wikimedia Foundation}}
{{Wikimedia Foundation}}


==Notes and references==
==References==
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==Further reading==
==Further reading==
{{sisterlinks|Wikipedia}}
{{sisterlinks|Wikipedia}}
*Fernanda B. Viegas, Martin Wattenberg, and Kushal Dave, "[http://web.media.mit.edu/~fviegas/papers/history_flow.pdf Studying Cooperation and Conflict between Authors with ''history flow'' Visualizations]", CHI 2004 [[April 24]] - [[April 29]] [[2004]]. Preliminary report "[http://researchweb.watson.ibm.com/history/ History Flow]" available on the IBM website.
*Fernanda B. Viegas, Martin Wattenberg, and Kushal Dave, "[http://web.media.mit.edu/~fviegas/papers/history_flow.pdf Studying Cooperation and Conflict between Authors with ''history flow'' Visualizations]", CHI 2004 [[April 24]]&ndash;[[April 29]], [[2004]]. Preliminary report "[http://researchweb.watson.ibm.com/history/ History Flow]" available on the IBM website.
*[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_in_academic_studies Wikipedia:Wikipedia in academic studies]
*[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_in_academic_studies Wikipedia:Wikipedia in academic studies]
*[http://en.wikipedia.org/wiki/Wikipedia:Introduction Wikipedia:Introduction]
*[http://en.wikipedia.org/wiki/Wikipedia:Introduction Wikipedia:Introduction]
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*[http://news.bbc.co.uk/1/hi/technology/4502846.stm BBC article regarding Wikipedia flaws]
*[http://news.bbc.co.uk/1/hi/technology/4502846.stm BBC article regarding Wikipedia flaws]
*[http://www.guardian.co.uk/online/story/0,3605,1546162,00.html Guardian UK article]
*[http://www.guardian.co.uk/online/story/0,3605,1546162,00.html Guardian UK article]
*[http://www.npost.com/interview.jsp?intID=INT00126 Interview with Wikipedia founder Jimmy Wales]," nPost, [[November 1]] [[2005]].
*[http://www.npost.com/interview.jsp?intID=INT00126 Interview with Wikipedia founder Jimmy Wales]," nPost, [[November 1]], [[2005]].
*[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_Signpost Wikipedia Signpost], newspaper about the English Wikipedia
*[http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_Signpost Wikipedia Signpost], newspaper about the English Wikipedia
*[http://www.newsxs.com/en/search/?search=quick_search&word=Wikipedia&lang=any&qs=Go Wikipedia in the news]. Aggregated news and rss-feed. (Multilingual)
*[http://www.newsxs.com/en/search/?search=quick_search&word=Wikipedia&lang=any&qs=Go Wikipedia in the news]. Aggregated news and rss-feed. (Multilingual)

Revision as of 14:38, 18 April 2006

Wikipedia
Detail of Wikipedia's multilingual portal at http://www.wikipedia.org. Here, the project's largest language editions are shown.
Type of site
Online encyclopedia
OwnerWikimedia Foundation
Created byJimmy Wales and Larry Sanger
CommercialNo
RegistrationOptional

Wikipedia (IPA: [/ˌwɪkiˈpiːdi.ə/] or [/ˌwiki-/]) is a multilingual Web-based free-content encyclopedia.[1] It exists as a wiki, a type of website that allows visitors to edit its content; the word Wikipedia itself is a portmanteau of wiki and encyclopedia. Wikipedia is written collaboratively by volunteers, allowing most articles to be changed by anyone with access to a computer, web browser and Internet connection. The project began on January 15, 2001 as a complement to the expert-written (and now defunct) Nupedia, and is now operated by the non-profit Wikimedia Foundation. Wikipedia has more than 3,700,000 articles in many languages, including more than 1,000,000 in the English-language version. Since its inception, Wikipedia has steadily risen in popularity[2] and has spawned several sister projects. Editors are required to uphold a policy of "neutral point of view", under which notable perspectives are summarized without an attempt to determine an objective truth.

Wikipedia's co-founder, Jimmy Wales, has called Wikipedia "an effort to create and distribute a multilingual free encyclopedia of the highest possible quality to every single person on the planet in their own language."[3] However, there has been controversy over Wikipedia's reliability and accuracy, with the site receiving criticism for its susceptibility to vandalism, uneven quality and inconsistency, systemic bias, and preference of consensus or popularity over credentials. Nevertheless, its free distribution, constant updates, diverse and detailed coverage, and numerous multilingual versions have made it one of the most-used reference sources on the Internet.

There are over 200 language editions of Wikipedia, around 130 of which are active. Fourteen editions have more than 50,000 articles each: English (the original), German, French, Polish, Japanese, Dutch, Italian, Swedish, Portuguese, Spanish, Russian, Chinese, Norwegian and Finnish. Its German-language edition has been distributed on DVD-ROM, and there are also proposals for an English DVD or paper edition. Many of its other editions are mirrored or have been forked by other websites.

Characteristics

The Wikipedia logo.

Wikipedia's slogan is "the free encyclopedia that anyone can edit." It is developed using a type of software called a "wiki", a term originally used for the WikiWikiWeb and derived from the Hawaiian wiki wiki, which means "quick". Jimmy Wales intends for Wikipedia to ultimately achieve a "Britannica or better" level of quality and be published in print.

Although several other encyclopedia projects exist or have existed on the Internet, none have achieved Wikipedia's size or popularity. Traditional multilingual editorial policies and article ownership are used in some, such as the expert-written Stanford Encyclopedia of Philosophy, the now-defunct Nupedia, and the more casual h2g2 and Everything2. Projects such as Wikipedia, Susning.nu, Enciclopedia Libre and WikiZnanie are other wikis in which articles are developed by numerous authors, and there is no formal process of review. Wikipedia has become the largest such encyclopedic wiki by article and word count. Unlike many encyclopedias, it has licensed its content under the GNU Free Documentation License.

Wikipedia has a set of policies identifying types of information appropriate for inclusion. These policies are often cited in disputes over whether particular content should be added, revised, transferred to a sister project, or removed.

Free content

The GNU Free Documentation License (GFDL), the license through which Wikipedia's articles are made available, is one of many "copyleft" copyright licenses that permit the redistribution, creation of derivative works, and commercial use of content, provided that its authors are attributed and this content remains available under the GFDL. When an author contributes original material to the project, the copyright over it is retained by them, but they agree to make the work available under the GFDL. Material on Wikipedia may thus be distributed multilingually to, or incorporated from, resources which also use this license.

Wikipedia's content has been mirrored and forked by hundreds of resources from database dumps. Although all text is available under the GFDL, a significant percentage of Wikipedia's images and sounds are not free. Items such as corporate logos, song samples, or copyrighted news photos are used with a claim of fair use.[4] Wikipedia content has also been used in academic studies, books, conferences, and court cases, albeit much more rarely. For example, the Parliament of Canada website refers to Wikipedia's article on same-sex marriage in the "further reading" list of Civil Marriage Act.[5] Some Wikipedia users, or Wikipedians, maintain (noncomprehensive) lists of such uses.[6]

Language editions

Wikipedia's article count has grown quickly in several of the major language editions.

Wikipedia encompasses 132 "active" language editions (ones with 100+ articles) as of April 2006.[7] Its five largest editions are, in descending order, English, German, French, Polish and Japanese. In total, Wikipedia contains 229 language editions of varying states, with a combined 3.5 million articles.[8]

Language editions operate independently of one another. Editions are not bound to the content of other language editions or direct translations of each other, nor are articles on the same subject required to be translations of each other. Automated translation of articles is explicitly disallowed, though multi-lingual editors of sufficient fluency are encouraged to translate articles by hand. The various language editions are held to global policies such as "neutral point of view", though they may diverge on subtler points of policy and practice. Articles and images are shared between Wikipedia editions, the former through "InterWiki" links and pages to request translations, and the latter through the Wikimedia Commons repository. Translated articles represent only a small portion of articles in any edition.[9]

The following is a list of the large editions, sorted by number of articles as of March 1, 2006. (The article count, however, is a limited metric for comparing the editions. For instance, in some Wikipedia versions nearly half of the articles are short articles created automatically by robots.[7])

An example of Wikipedia's range in language editions: Wikipedia in Hebrew. [1]
  1. English (1,068,250)
  2. German (363,360)
  3. French (248,399)
  4. Polish (217,656)
  5. Japanese (187,379)
  6. Dutch (150,461)
  7. Italian (141,234)
  8. Swedish (141,010)
  9. Portuguese (118,697)
  10. Spanish (101,024)
  11. Russian (61,264)
  12. Chinese (58,469)
  13. Norwegian Bokmål (52,392)
  14. Finnish (51,250)
  15. Esperanto (40,968)

Editing

Editors keep track of changes to articles by checking the difference between two revisions of a page, displayed here in red.

Almost all visitors may edit Wikipedia's content, and registered users can create new articles and have their changes instantly displayed. Wikipedia is built on the expectation that collaboration among users will improve articles over time, in much the same way that open-source software develops. Some of Wikipedia's editors have explained its editing process as a "socially Darwinian evolutionary process",[10] but this description is not accepted by most Wikipedians.

Although many users take advantage of Wikipedia's openness to add nonsense to the encyclopedia, most deliberately disruptive edits and comments are quickly found and deleted by other editors. This real-time, collaborative model allow editors to rapidly update existing topics as they develop and to introduce new ones as they arise. However, this collaboration also sometimes leads to "edit wars" and prolonged disputes when editors do not agree.[11]

The "recent changes" page shows the newest edits to the English Wikipedia. This page is often watched by users who revert vandalism. There is also a live recent changes IRC channel, #en.wikipedia.

Articles are always subject to editing, unless the article is protected for a short time due to the aforementioned vandalism or revert wars; Wikipedia does not declare any of its articles to be "complete" or "finished". The authors of articles need not have any expertise or formal qualifications in the subjects which they edit, and users are warned that their contributions may be "edited mercilessly and redistributed at will" by anyone who wishes to do so. Its articles are not controlled by any particular user or editorial group; decisions on the content and editorial policies of Wikipedia are instead made largely through consensus decision-making and, occasionally, by vote. Jimmy Wales retains final judgement on Wikipedia policies and user guidelines.[12]

Regular users often maintain a "watchlist" of articles of interest to them, so that they can easily keep tabs on all recent changes to those articles, including new updates, discussions, and vandalism. Most past edits to Wikipedia articles also remain viewable after the fact, and are stored on "edit history" pages sorted chronologically, making it possible to see former versions of any page at any time. The only exceptions are the entire histories of articles which have been deleted, and many individual edits which contain libellous statements, copyright violations, and other content which could incur legal liability or be otherwise detrimental to Wikipedia; these edits may only be viewed by Wikipedia administrators.

History

File:NupediaLogo.jpg
Wikipedia originally developed out of another encyclopedia project, Nupedia.

Wikipedia began as a complementary project for Nupedia, a free online encyclopedia project whose articles were written by experts through a formal process. Nupedia was founded on March 9, 2000 under the ownership of Bomis, Inc, a Web portal company. Its principal figures were Jimmy Wales, Bomis CEO, and Larry Sanger, editor-in-chief for Nupedia and later Wikipedia. Nupedia was described by Sanger as differing from existing encyclopedias in being open content, in not having size limitations, as it was on the Internet, and in being free of bias, due to its public nature and potentially broad base of contributors.[13] Nupedia had a seven-step review process by appointed subject-area experts, but later came to be viewed as too slow for producing a limited number of articles. Funded by Bomis, there were initial plans to recoup its investment by the use of advertisements.[13] It was initially licensed under its own Nupedia Open Content License, switching to the GNU Free Documentation License prior to Wikipedia's founding at the urging of Richard Stallman.

On January 10, 2001, Larry Sanger proposed on the Nupedia mailing list to create a wiki alongside Nupedia. Under the subject "Let's make a wiki", he wrote:

No, this is not an indecent proposal. It's an idea to add a little feature to Nupedia. Jimmy Wales thinks that many people might find the idea objectionable, but I think not. (…) As to Nupedia's use of a wiki, this is the ULTIMATE "open" and simple format for developing content. We have occasionally bandied about ideas for simpler, more open projects to either replace or supplement Nupedia. It seems to me wikis can be implemented practically instantly, need very little maintenance, and in general are very low-risk. They're also a potentially great source for content. So there's little downside, as far as I can see.[14]

Wikipedia was formally launched on January 15, 2001, as a single English-language edition at http://www.wikipedia.com, and announced by Sanger on the Nupedia mailing list.[15] It had been, from January 10, a feature of Nupedia.com in which the public could write articles that could be incorporated into Nupedia after review. It was relaunched off-site after Nupedia's Advisory Board of subject experts disapproved of its production model.[16] Wikipedia thereafter operated as a standalone project without control from Nupedia. Its policy of "neutral point-of-view" was codified in its initial months, though it is similar to Nupedia's earlier "nonbias" policy. There were otherwise few rules initially. Wikipedia gained early contributors from Nupedia, Slashdot postings, and search engine indexing. It grew to approximately 20,000 articles, and 18 language editions, by the end of its first year. It had 26 language editions by the end of 2002, 46 by the end of 2003, and 161 by the end of 2004.[17] Nupedia and Wikipedia coexisted until the former's servers went down, permanently, in 2003, and its text was incorporated into Wikipedia.

Wikipedia's English edition on March 30, 2001, two and a half months after its founding.

Wales and Sanger attribute the concept of using a wiki to Ward Cunningham's WikiWikiWeb or Portland Pattern Repository. Wales mentioned that he heard the concept first from Jeremy Rosenfeld, an employee of Bomis who showed him the same wiki, in December 2000,[18] but it was after Sanger heard of its existence in January 2001 from Ben Kovitz, a regular at the wiki,[16] that he proposed the creation of a wiki for Nupedia to Wales and Wikipedia's history started. Under a similar concept of free content, though not wiki-based production, the GNUpedia project existed alongside Nupedia early in its history. It subsequently became inactive, and its creator, free-software figure Richard Stallman, lent his support to Wikipedia.[19]

Citing fears of commercial advertising and lack of control in a perceived English-centric Wikipedia, users of the Spanish Wikipedia forked from Wikipedia to create the Enciclopedia Libre in February 2002. Later that year, Wales announced that Wikipedia would not display advertisements, and its website was moved to wikipedia.org. Various other projects have since forked from Wikipedia for editorial reasons, such as Wikinfo, which abandoned "neutral point-of-view" in favor of multiple complementary articles written from a "sympathetic point-of-view".

The Wikimedia Foundation was created from Wikipedia and Nupedia on June 20, 2003.[20] Wikipedia and its sister projects thereafter operated under this non-profit organization. Wikipedia's first sister project, "In Memoriam: September 11 Wiki", had been created in October 2002 to detail the September 11, 2001 attacks; Wiktionary, a dictionary project, was launched in December 2002; Wikiquote, a collection of quotations, a week after Wikimedia launched; and Wikibooks, a collection of collaboratively-written free books, the next month. Wikimedia has since started a number of other projects, detailed below.

Wikipedia has traditionally measured its status by article count. In its first two years, it grew at a few hundred or fewer new articles per day; by 2004, this had accelerated to a total of 1,000 to 3,000 per day (counting all editions). The English Wikipedia reached its 100,000-article milestone on January 22, 2003[21]. Wikipedia reached its one millionth article, among the 105 language editions that existed at the time, on September 20, 2004,[22] while the English edition alone reached its 500,000th on March 18, 2005.[23] This figure had doubled less than a year later, with the millionth article in the English edition being created on March 1, 2006[24]; meanwhile, the millionth user registration had been made just 2 days before.

The Wikimedia Foundation applied to the United States Patent and Trademark Office to trademark Wikipedia® on September 17, 2004. The mark was granted registration status on January 10, 2006. Trademark protection was accorded by Japan on December 16, 2004 and in the European Union on January 20, 2005. Technically a service mark, the scope of the mark is for: "Provision of information in the field of general encyclopedic knowledge via the Internet".

There are currently plans to license the usage of the Wikipedia trademark for some products, such as books or DVDs.[25] The German Wikipedia will be printed in its entirety by Directmedia, in 100 volumes of 800 pages each, beginning in October 2006, and publishing will finish in 2010.

Software and hardware

Wikipedia receives over 2000 page views per second. More than 100 servers have been set up to handle the traffic.

Wikipedia is run by MediaWiki free software on a cluster of dedicated servers located in Florida and four other locations around the world. MediaWiki is Phase III of the program's software. Originally, Wikipedia ran on UseModWiki by Clifford Adams (Phase I). At first it required CamelCase for links; later it was also possible to use double brackets. Wikipedia began running on a PHP wiki engine with a MySQL database in January 2002. This software, Phase II, was written specifically for the Wikipedia project by Magnus Manske. Several rounds of modifications were made to improve performance in response to increased demand. Ultimately, the software was rewritten again, this time by Lee Daniel Crocker. Instituted in July 2002, this Phase III software was called MediaWiki. It was licensed under the GNU General Public License and used by all Wikimedia projects.

Some Wikimedia servers.

Wikipedia was served from a single server until 2003, when the server setup was expanded into a distributed multitier architecture. In January 2005, the project ran on 39 dedicated servers located in Florida. This configuration included a single master database server running MySQL, multiple slave database servers, 21 web servers running the Apache software, and seven Squid cache servers. By September 2005, its server cluster had grown to around 100 servers in four locations around the world.

Page requests are processed by first passing to a front-end layer of Squid caching servers. Requests that cannot be served from the Squid cache are sent to two load-balancing servers running the Perlbal software, which then pass the request to one of the Apache web servers for page-rendering from the database. The web servers serve pages as requested, performing page rendering for all the Wikipedias. To increase speed further, rendered pages for anonymous users are cached in a filesystem until invalidated, allowing page rendering to be skipped entirely for most common page accesses. Wikimedia has begun building a global network of caching servers with the addition of three such servers in France. A new Dutch cluster is also online now. In spite of all this, Wikipedia page load times remain quite variable. The ongoing status of Wikipedia's website is posted by users at a status page on OpenFacts.

Funding

Wikipedia is funded through the Wikimedia Foundation. Its 4th Quarter 2005 costs were $321,000 with hardware making up almost 60% of the budget.[26]

Bomis, an online advertising company that hosts mostly adult-oriented web-rings, played a significant part in the early development of Wikipedia.

Evaluations

Wikipedia's claimed status as an encyclopedia has been increasingly controversial as it has gained prominence. This is seen in articles and discussion venues both within Wikipedia and elsewhere. Information related to evaluations of Wikipedia, including individual opinions, quality control, and awards are discussed below.

General criticism

Criticism of Wikipedia has increased with its prominence. Critics of Wikipedia include Wikipedia editors themselves, ex-editors, representatives of other encyclopedias, and even subjects of the articles. Notable criticisms include that its open nature makes Wikipedia unauthoritative and unreliable, that Wikipedia exhibits systemic bias and that the group dynamics of its community are hindering its goals.

Wikipedia is criticised on the following issues:[citation needed]

  • Anti-elitism as a weakness
  • Systemic bias in coverage
  • Systemic bias in perspective
  • Difficulty of fact checking
  • Use of dubious sources
  • Exposure to vandals
  • Privacy concerns
  • Flame wars
  • Fanatics and special interests
  • Censorship

It must be noted that many university lecturers discourage their students from using any encyclopedia as a reference in academic work, preferring primary sources instead.[citation needed]

Quality

Wikipedia has been both praised and criticized for being open to editing by anyone. Proponents contend that open editing improves quality over time while critics allege that non-expert editing undermines quality.

Wikipedia has been criticized for a perceived lack of reliability, comprehensiveness, and authority. It is considered to have no or limited utility as a reference work among many librarians, academics, and the editors of more formally written encyclopedias. A website called Wikipedia Watch has been created to denounce Wikipedia as having "…a massive, unearned influence on what passes for reliable information." [27]

Some argue that allowing anyone to edit makes Wikipedia an unreliable work. Wikipedia contains no formal peer review process for fact-checking, and the editors themselves may not be well-versed in the topics they write about. In a 2004 interview with The Guardian, librarian Philip Bradley said that he would not use Wikipedia and is "not aware of a single librarian who would. The main problem is the lack of authority. With printed publications, the publishers have to ensure that their data are reliable, as their livelihood depends on it. But with something like this, all that goes out the window" (Waldman, 2004). Similarly, Encyclopædia Britannica's executive editor, Ted Pappas, was quoted in The Guardian as saying: "The premise of Wikipedia is that continuous improvement will lead to perfection. That premise is completely unproven."[28] On October 24, 2005, The Guardian published an article "Can you trust Wikipedia?" where a group of experts critically reviewed entries for their fields. Discussing Wikipedia as an academic source, Danah Boyd said in 2005 that "[i]t will never be an encyclopedia, but it will contain extensive knowledge that is quite valuable for different purposes".[29]

Be Bold has become the unofficial slogan of Wikipedia.

Academic circles have not been exclusively dismissive of Wikipedia as a reference. Wikipedia articles have been referenced in "enhanced perspectives" provided on-line in Science. The first of these perspectives to provide a hyperlink to Wikipedia was "A White Collar Protein Senses Blue Light" (Linden, 2002), and dozens of enhanced perspectives have provided such links since then. However, these links are offered as background sources for the reader, not as sources used by the writer, and the "enhanced perspectives" are not intended to serve as reference material themselves.

In a 2004 piece called "The Faith-Based Encyclopedia," former Britannica editor Robert McHenry criticized the wiki approach, writing,

[h]owever closely a Wikipedia article may at some point in its life attain to reliability, it is forever open to the uninformed or semiliterate meddler… The user who visits Wikipedia to learn about some subject, to confirm some matter of fact, is rather in the position of a visitor to a public restroom. It may be obviously dirty, so that he knows to exercise great care, or it may seem fairly clean, so that he may be lulled into a false sense of security. What he certainly does not know is who has used the facilities before him.[30]

In response to this criticism, proposals have been made to provide various forms of provenance for material in Wikipedia articles; see for example Wikipedia:Provenance. The idea is to provide source provenance on each interval of text in an article and temporal provenance as to its vintage. In this way a reader can know "who has used the facilities before him" and how long the community has had to process the information in an article to provide calibration on the "sense of security." However, these proposals for provenance are quite controversial (see Wikipedia talk:Provenance). Aaron Krowne wrote a rebuttal article in which he criticized McHenry's methods, and labeled them "FUD," the marketing technique of "fear, uncertainty, and doubt."[31]

Former Nupedia editor-in-chief Larry Sanger criticized Wikipedia in late 2004 for having, according to Sanger, an "anti-elitist" philosophy of active contempt for expertise.[32]

Wikipedia's editing process assumes that exposing an article to many users will result in accuracy. Referencing Linus' law of open-source development, Sanger stated earlier: "Given enough eyeballs, all errors are shallow."[33] Technology figure Joi Ito wrote on Wikipedia's authority, "[a]lthough it depends a bit on the field, the question is whether something is more likely to be true coming from a source whose resume sounds authoritative or a source that has been viewed by hundreds of thousands of people (with the ability to comment) and has survived."[34] Conversely, in an informal test of Wikipedia's ability to detect misinformation, its author remarked that its process "isn't really a fact-checking mechanism so much as a voting mechanism", and that material which did not appear "blatantly false" may be accepted as true.[35]

Wikipedia has been accused of deficiencies in comprehensiveness because of its voluntary nature, and of reflecting the systemic biases of its contributors. Encyclopædia Britannica editor-in-chief Dale Hoiberg has argued that "people write of things they're interested in, and so many subjects don't get covered; and news events get covered in great detail. The entry on Hurricane Frances was five times the length of that on Chinese art, and the entry on Coronation Street was twice as long as the article on Tony Blair."[28] (As of December 2005, this is no longer the case.) Former Nupedia editor-in-chief Larry Sanger stated in 2004, "when it comes to relatively specialized topics (outside of the interests of most of the contributors), the project's credibility is very uneven."[32]

The English-language website also suffers from frequent timeouts, server errors and occasional downtime due to heavy user traffic. These problems have had a negative impact on Wikipedia's desired image as a fast and reliable source of information.

It has been praised for, as a wiki, allowing articles to be updated or created in response to current events. For example, the then-new article on the 2004 Indian Ocean earthquake on its English edition was cited often by the press shortly after the incident. Its editors have also argued that, as a website, Wikipedia is able to include articles on a greater number of subjects than print encyclopedias may.[36]

Microsoft Encarta has started to solicit comments from readers in attempt to improve the accuracy and timeliness of its encyclopedia. Encarta Feedback allows any user to propose revisions for review by their staff.[37]

The German computing magazine c't performed a comparison of Brockhaus Multimedial, Microsoft Encarta, and Wikipedia in October 2004: Experts evaluated 66 articles in various fields. In overall score, Wikipedia was rated 3.6 out of 5 points ("B-"), Brockhaus Premium 3.3, and Microsoft Encarta 3.1.[38] In an analysis of online encyclopedias, Indiana University professors Emigh and Herring wrote that "Wikipedia improves on traditional information sources, especially for the content areas in which it is strong, such as technology and current events."[39]. The journal Nature reported in 2005 that science articles in Wikipedia were comparable in accuracy to those in Encyclopedia Britannica. Wikipedia had an average of four mistakes per article; Britannica contained three. Of eight "serious errors" found — including misinterpretations of important concepts — four came from each source.[40]. On March 24, 2006, Britannica provided a rebuttal labeling the study "fatally flawed". [41].

At the end of 2005, controversy erupted after journalist John Seigenthaler Sr. found that his biography had been written largely as a hoax about Seigenthaler. This led to the decision to restrict the ability to start articles to registered users.

Community

The Wikipedia community consists of users who are proportionally few, but highly active. Emigh and Herring argue that "a few active users, when acting in concert with established norms within an open editing system, can achieve ultimate control over the content produced within the system, literally erasing diversity, controversy, and inconsistency, and homogenizing contributors' voices." Editors on Wikinfo, a fork of Wikipedia, similarly argue that new or controversial editors to Wikipedia are often unjustly labeled "trolls" or "problem users" and blocked from editing.[42] Its community has also been criticized for responding to complaints regarding an article's quality by advising the complainer to fix the article.[43]

In a page on researching with Wikipedia, its authors argue that Wikipedia is valuable for being a social community. That is, authors can be asked to defend or clarify their work, and disputes are readily seen.[44] Wikipedia editions also often contain reference desks in which the community answers questions.

Awards

Wikipedia won two major awards in May 2004[45]: The first was a Golden Nica for Digital Communities, awarded by Prix Ars Electronica; this came with a 10,000 euro grant and an invitation to present at the PAE Cyberarts Festival in Austria later that year. The second was a Judges' Webby award for the "community" category. Wikipedia was also nominated for a "Best Practices" Webby. In September 2004, the Japanese Wikipedia was awarded a Web Creation Award from the Japan Advertisers Association. This award, normally given to individuals for great contributions to the Web in Japanese, was accepted by a long-standing contributor on behalf of the project. Wikipedia has received plaudits from sources including BBC News, Washington Post, The Economist, Newsweek, Los Angeles Times, Science, The Guardian, Chicago Sun-Times, The Times (London), Toronto Star, Globe and Mail, The Financial Times, Time Magazine, Irish Times, Reader's Digest and The Daily Telegraph.

Authors

During December 2005, Wikipedia had about 27,000 users who made at least five edits that month; 17,000 of these active users worked on the English edition.[46] A more active group of about 4,000 users made more than 100 edits per month, over half of these users having worked in the English edition. According to Wikimedia, one-quarter of Wikipedia's traffic comes from users without accounts, who are less likely to be editors.[47]

Maintenance tasks are performed by a group of volunteer developers, stewards, bureaucrats, and administrators, which number in the hundreds. Administrators are the largest such group, privileged with the ability to prevent articles from being edited, delete articles, or block users from editing in accordance with community policy. Many users have been temporarily or permanently blocked from editing Wikipedia. Vandalism or the minor infraction of policies may result in a warning or temporary block, while long-term or permanent blocks for prolonged and serious infractions are given by Jimmy Wales or, on its English edition, an elected Arbitration Committee.

Former Nupedia editor-in-chief Larry Sanger has said that having the GFDL license as a "guarantee of freedom is a strong motivation to work on a free encyclopedia."[48] In a study of Wikipedia as a community, Economics professor Andrea Ciffolilli argued that the low transaction costs of participating in wiki software create a catalyst for collaborative development, and that a "creative construction" approach encourages participation.[49] Wikipedia has been viewed as a social experiment in anarchy, democracy, or communism. Its founder has replied that it is not intended as one, though that is a consequence.[50] Critics of Wikipedia have also viewed it as an oligarchy which is controlled primarily by its administrators, stewards, and bureaucrats, or simply by a small number of its contributors. Daniel Brandt of Wikipedia Watch has referred to Jimbo Wales as the "dictator" of Wikipedia; however, most Wikipedia users do not consider Wales to be a dictator.

Alternative spellings

Template:SpecialChars-section Here is a list of alternative spellings for Wikipedia, according to the language editions:

Wikipedia in pop culture

See also

Notes and references

  1. ^ Some critics have suggested that Wikipedia cannot justifiably be called an "encyclopedia", a term which (it is claimed) implies a high degree of reliability and authority that Wikipedia, due to its open editorial policies, may not be able to maintain. However, Wikipedia meets all the criteria for the basic definition of the word encyclopedia.
  2. ^ See plots at "Visits per day", Wikipedia Statistics, January 1, 2005
  3. ^ Jimmy Wales, "Wikipedia is an encyclopedia", March 8, 2005, <wikipedia-l@wikimedia.org>
  4. ^ "Wikipedia as a press source 2005", Wikipedia (March 28, 2005)
  5. ^ "C-38", LEGISINFO (March 28, 2005)
  6. ^ Wikipedia as a source
  7. ^ a b "Complete list of language Wikipedias available", Meta-Wiki (April 15, 2006)
  8. ^ "Complete list of language Wikipedias available", Meta-Wiki, April 15, 2006
  9. ^ For example, "Translation into English," Wikipedia. (March 9, 2005)
  10. ^ "Wikipedia sociology", Meta-Wiki, 23:30 March 24, 2005
  11. ^ "Edit war", Wikipedia (March 26, 2005)
  12. ^ "Power structure", Meta-Wiki, 10:55 April 4, 2005
  13. ^ a b Larry Sanger, "Q & A about Nupedia", Nupedia, March 2000
  14. ^ Sanger, Larry (January 10, 2001). "Let's make a wiki". Internet Archive. {{cite news}}: Check date values in: |date= (help)
  15. ^ Sanger, Larry (January 17, 2001). "Wikipedia is up!". Internet Archive. {{cite news}}: Check date values in: |date= (help)
  16. ^ a b Sanger, Larry (April 18, 2005). "The Early History of Nupedia and Wikipedia: A Memoir". Slashdot.
  17. ^ "Multilingual statistics", Wikipedia, March 30, 2005
  18. ^ Jimmy Wales, "Re: Sanger's memoirs", April 20, 2005,<wikipedia-l@wikipedia.org>
  19. ^ Stallman, Richard (1999). "The Free Encyclopedia Project". Free Software Foundation.
  20. ^ Jimmy Wales: "Announcing Wikimedia Foundation", June 20, 2003, <wikipedia-l@wikipedia.org>
  21. ^ "Wikipedia, the free encyclopedia, reaches its 100,000th article", Wikimedia Foundation, January 21, 2003
  22. ^ "Wikipedia Reaches One Million Articles", Wikimedia Foundation, September 20, 2004
  23. ^ "Wikipedia Publishes 500,000th English Article", Wikimedia Foundation, March 18, 2005
  24. ^ "English Wikipedia Publishes Millionth Article", Wikimedia Foundation, March 1, 2006
  25. ^ Nair, Vipin (December 5, 2005). "Growing on volunteer power". Business Line.
  26. ^ "Budget/2005". Wikimedia Foundation. Retrieved 2006-03-11.
  27. ^ Brandt, Daniel/PIR. Wikipedia Watch http://www.wikipedia-watch.org/, accessed April 2006.
  28. ^ a b Simon Waldman, "Who knows?", The Guardian, October 26, 2004.
  29. ^ Danah Boyd, "Academia and Wikipedia", Many-to-Many, January 4, 2005.
  30. ^ Robert McHenry, "The Faith-Based Encyclopedia", Tech Central Station, November 15, 2004.
  31. ^ Aaron Krowne, "The FUD-based Encyclopedia", Free Software Magazine, March 1, 2005.
  32. ^ a b Larry Sanger, "Why Wikipedia Must Jettison Its Anti-Elitism", Kuro5hin, December 31, 2004.
  33. ^ Larry Sanger, "Wikipedia is wide open. Why is it growing so fast? Why isn't it full of nonsense?", Kuro5hin, September 24, 2001.
  34. ^ Joi Ito, "Wikipedia attacked by ignorant reporter", Joi Ito's Web, August 29, 2004.
  35. ^ Anonymous blogger, "How Authoritative is Wikipedia", Dispatches from the Frozen North, September 4, 2004.
  36. ^ "Wikipedia:Replies to common objections", Wikipedia, 22:53 April 13, 2005.
  37. ^ "Wikipedia:Wikipedia Signpost/2005-04-11/Encarta editing", Wikipedia, April 11, 2005.
  38. ^ Michael Kurzidim: Wissenswettstreit. Die kostenlose Wikipedia tritt gegen die Marktführer Encarta und Brockhaus an, in: c't 21/2004, October 4, 2004, S. 132-139.
  39. ^ William Emigh and Susan C. Herring, "Collaborative Authoring on the Web: A Genre Analysis of Online Encyclopedias", paper presented at the 39th Hawaii International Conference on System Sciences, 2004.
  40. ^ "Wikipedia survives research test". BBC News. BBC. December 15, 2005.
  41. ^ "Journal Nature study "fatally flawed" says Britannica". WikiNews. Wikipedia Foundation. March 24, 2006.
  42. ^ "Critical views of Wikipedia", Wikinfo, 07:28 March 30, 2005.
  43. ^ Andrew Orlowski, "Wiki-fiddlers defend Clever Big Book", The Register, July 23, 2004.
  44. ^ "Wikipedia:Researching with Wikipedia", Wikipedia (March 28, 2005).
  45. ^ "Trophy Box", Meta-Wiki (March 28, 2005).
  46. ^ Paragraph's statistics taken from "Active wikipedians" (Wikipedia Statistics, April 13, 2006).
  47. ^ "Wikipedia", Meta-Wiki, 08:02 March 30, 2005.
  48. ^ Larry Sanger, "Britannica or Nupedia? The Future of Free Encyclopedias", Kuro5hin, July 25, 2001.
  49. ^ Andrea Ciffolilli, "Phantom authority, self-selective recruitment and retention of members in virtual communities: The case of Wikipedia", First Monday December 2003.
  50. ^ Jimmy Wales, "Re: Illegitimate block", January 26, 2005, <wikien-l@wikimedia.org>.

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