History of Wikipedia is included in the Wikipedia CD Selection, see History of Wikipedia at Schools Wikipedia. Please maintain high quality standards; if you are an established editor your last version in the article history may be used so please don't leave the article with unresolved issues, and make an extra effort to include free images, because non-free images cannot be used on the DVDs.
Expand lead section, should really be two or three paragraphs at least
Re-structure it: all the old stuff is in named sections, stuff from the "middle" of the history is in sections numbered by year, and the newer stuff is... not really there at all. Done?
Fill in what's missing – more than that must have happened in 2006!
review each area for changes regularly (eg: major policy development, major changes elsewhere in the community, wikimedia fouhdation, sister projects and landmarks, software and server farms, controversies and impact in the world)
Eliminate self-references in the form of direct links to project pages
Eliminate unnecessary detailed dates and consider prose form in some areas.