Saturday, April 23, 2011

Wikipedia

Wikipedia (Listeni /ˌwɪkɪˈpdi.ə/ or Listeni /ˌwɪkiˈpdi.ə/ WIK-i-PEE-dee-ə) is a free, web-based, collaborative, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Its 18 million articles (over 3.6 million in English) have been written collaboratively by volunteers around the world, and almost all of its articles can be edited by anyone with access to the site.[3] Wikipedia was launched in 2001 by Jimmy Wales and Larry Sanger[4] and has become the largest and most popular general reference work on the Internet,[2][5][6][7] ranking around seventh among all websites on Alexa and having 365 million readers.[8][9]

The name Wikipedia was coined by Larry Sanger[10] and is a portmanteau of wiki (a technology for creating collaborative websites, from the Hawaiian word wiki, meaning "quick") and encyclopedia.

Wikipedia's departure from the expert-driven style of encyclopedia building and the large presence of unacademic content has been noted several times. When Time magazine recognized You as its Person of the Year for 2006, acknowledging the accelerating success of online collaboration and interaction by millions of users around the world, it cited Wikipedia as one of several examples of Web 2.0 services, along with YouTube, MySpace, and Facebook.[11] Some have noted the importance of Wikipedia not only as an encyclopedic reference but also as a frequently updated news resource because of how quickly articles about recent events appear.[12][13] Students have been assigned to write Wikipedia articles as an exercise in clearly and succinctly explaining difficult concepts to an uninitiated audience.[14]

Although the policies of Wikipedia strongly espouse verifiability and a neutral point of view, critics of Wikipedia accuse it of systemic bias and inconsistencies (including undue weight given to popular culture),[15] and allege that it favors consensus over credentials in its editorial processes.[16] Its reliability and accuracy are also targeted.[17] Other criticisms center on its susceptibility to vandalism and the addition of spurious or unverified information;[18] however, scholarly work suggests that vandalism is generally short-lived.[19][20] An investigation in Nature found that the science articles they compared came close to the level of accuracy of Encyclopædia Britannica and had a similar rate of "serious errors."[21]

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