Like button

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The "Like" icon used by Facebook.

A like button, like option, or recommend button is a feature in communication software such as social networking services, Internet forums, news websites and blogs where the user can express that they like, enjoy or support certain content.[1] Internet services that feature like buttons usually display the number of users who liked each content, and may show a full or partial list of them. This is a quantitative alternative to other methods of expressing reaction to content, like writing a reply text. Some websites also include a dislike button, so the user can either vote in favour, against or neutrally. Other websites include more complex Web content voting systems, for example five stars or reaction buttons to show a wider range of emotion to the content.



The first like button was created in 2005 at Vimeo, with a team comprising Andrew Pile, Jake Lodwick, Kunal Shah, and Zach Klein. It was meant to be a more casual alternative to "favorites", and was heavily inspired by "diggs" from the site


The like button was first announced as a FriendFeed feature on October 30, 2007 and was popularized within that community.[2] Later the feature was integrated into Facebook before FriendFeed was acquired by Facebook August 10, 2009.[3]


The Facebook like button is designed as a hand giving "thumbs up". It was originally discussed to have been a star or a plus sign, and during development the feature was referred to as "awesome" instead of "like".[citation needed]It was introduced on 9 February 2009.[4] In February 2016, Facebook introduced reactions - a new way to express peoples emotions to Facebook posts. Some reactions included "Love", "Haha", "Wow", "Sad", or "Angry". Due to the COVID-19 pandemic, Facebook introduced another reaction, "Care".

The Influence of the Like Button[edit]

The like button is a significant power sharing tool, as one "like" will make the post show up on friends' feed, boosting the algorithm to ensure the post is seen and interacted with in order to continue the cycle of engagement.[5]


In 2010, as part of a wider redesign of the service, YouTube switched from a star-based rating system to Like/Dislike buttons. Under the previous system, users could rate videos on a scale from 1 to 5 stars; YouTube staff argued that this change reflected common usage of the system, as 2-, 3-, and 4-star ratings were not used as often.[6][7]

In 2012, YouTube briefly experimented with replacing the Like and Dislike buttons with a Google+ +1 button.[8]

In 2019, after the backlash from YouTube Rewind 2018, YouTube is now considering options to combat "dislike mobs," including an option to completely remove the dislike button.[9] The video is the most disliked video on YouTube, passing Justin Bieber's "Baby".

In contrast to the display of the views, the display of the number of likes and dislikes on a YouTube video is normally not “frozen”, though rarely it can be frozen for unknown reasons. For example, on January 23, 2019, the likes and dislikes on Despacito were frozen for about 8 hours. [10] [11] The glitch was fixed by 16:00 UTC that same day. [12]


+1, the "Like" button of Google+ (old version)

Google+ had a like button called the +1 (Internet jargon for "I like that" or "I agree"), which was introduced in June 2011.[13] In August 2011, the +1 button also became a share icon.[14]


On Reddit (a system of message boards), users can upvote and downvote posts (and comments on posts). The votes contribute to posters' and commenters' "karma" (Reddit's name for a user's overall rating).[15][16]


Alongside "retweets", Twitter users could "favorite" posts made on the service, indicated by a gold star symbol (FA star.svg). In November 2015, to alleviate user confusion and put the function more in line with other social networks, the "favorite" function was renamed "like", and its button was changed from a star symbol to a heart (Animated SVG Heart.svg).[17]


VK like buttons for posts, comments, media and external sites operate in a different way from Facebook. Liked content doesn't get automatically pushed to the user's wall, but is saved in the (private) Favorites section instead.


Instagram like button is indicated by a heart symbol, users can use the like button by double tapping on a post they like and there is no limit to number of posts they want to double tap. In July 2019, Instagram conducted a test of hiding a number of likes on users posts from followers, meaning that users can see the count of likes but not their followers.


The TikTok like button is indicated by a heart symbol, and users can use the like button by double tapping on a post they like, similar to Instagram. Liked content can be accessed via the "Liked" tab on a user's profile.


XWiki, the application wiki and open source collaborative platform, has added the « Like » button in version 12.7. This button allows users to like wiki pages. It's possible to see all liked pages and the Like counter for each page.

Legal issues[edit]

In 2017, a man was fined 4,000 Swiss francs by a Swiss regional court for liking defamatory messages on Facebook written by other people which criticized an activist. According to the court, the defendant "clearly endorsed the unseemly content and made it his own".[18]

See also[edit]


  1. ^ Dedić, N. and Stanier, C. (2017) “Towards Differentiating Business Intelligence, Big Data, Data Analytics and Knowledge Discovery“. Lecture Notes in Business Information Processing (LNBIP). Springer International Publishing. Volume 285.
  2. ^ Taylor, Bret (2007-10-30). "I like it, I like it". FriendFeed Blog. Retrieved 2014-10-21.
  3. ^ Kincaid, Jason (2009-08-10). "Facebook Acquires FriendFeed (Updated)". TechCrunch. Retrieved 2014-10-21.
  4. ^ Kincaid, Jason (2009-02-09). "Facebook Activates "Like" Button; FriendFeed Tires Of Sincere Flattery". TechCrunch. Retrieved 2014-01-30.
  5. ^ Ozanne, Marie; Cueva Navas, Ana; Mattila, Anna S.; Van Hoof, Hubert B. (2017-04-01). "An Investigation Into Facebook "Liking" Behavior An Exploratory Study". Social Media + Society. 3 (2): 2056305117706785. doi:10.1177/2056305117706785. ISSN 2056-3051.
  6. ^ Lowensohn, Josh (31 March 2010). "YouTube's big redesign goes live to everyone". CNET. Retrieved 9 November 2015.
  7. ^ Siegler, M.G. (22 September 2009). "YouTube Comes To A 5-Star Realization: Its Ratings Are Useless". TechCrunch. Retrieved 9 November 2015.
  8. ^ "Google+ replacing ability to dislike a YouTube video?". Retrieved 9 November 2015.
  9. ^ Best, Shivali (2019-02-05). "YouTube might remove its dislike button to combat 'dislike mobs'". mirror. Retrieved 2019-02-18.
  10. ^ "Luis Fonsi - Despacito". Archived from the original on 2019-01-23.
  11. ^ "Luis Fonsi - Despacito". Archived from the original on 2019-01-23.
  12. ^ "Luis Fonsi - Despacito". Archived from the original on 2019-01-23.
  13. ^ Siegler, M.G. (31 May 2011). "Whoops Redux: Looks Like Partner Just Leaked Google's +1 Button For Websites Launch". TechCrunch. Retrieved 14 February 2015.
  14. ^ Newman, Jared (24 August 2011). "Google +1 Now Links to Google+ Profiles: Let the War on Facebook's 'Like' Button Begin". PC World. Retrieved 14 February 2015.
  15. ^ "Yes, Reddit's r/The_Donald was infiltrated by anti-Clinton Russian trolls". 11 April 2018. Retrieved 25 October 2018.
  16. ^ "How to Build Reddit Karma Quickly - Online Business Realm". 12 February 2018. Retrieved 25 October 2018.
  17. ^ "Twitter officially kills off favorites and replaces them with likes". The Verge. Vox Media. Retrieved 4 November 2015.
  18. ^ Man fined by Swiss court for 'liking' defamatory comments on Facebook - The Guardian / AFP, 20 May 2017