Wikipedia (pronounced /ÌwiÐkiÈpiÐdi.Y/, WEE-kee-PEE-dee-Y or /ÌwjkhÈpiÐdi.Y/, WI-ki-PEE-dee-Y) is a free, web-based, collaborative, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Its name is a portmanteau of the words wiki (a technology for creating collaborative websites, from the Hawaiian word wiki, meaning "quick") and encyclopedia. Wikipedia's 13 million articles (three million in the English Wikipedia) 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. Launched in 2001 by Jimmy Wales and Larry Sanger, it is currently the largest and most popular general reference work on the Internet.
Critics of Wikipedia accuse it of systemic bias and inconsistencies (including undue weight given to popular culture), and allege that it favors consensus over credentials in its editorial process. Its reliability and accuracy are also claimed to be an issue. Other criticisms center on its susceptibility to vandalism and the addition of spurious or unverified information, though scholarly work suggests that vandalism is generally short-lived, and an investigation found that the material they compared came close to the level of accuracy of Encyclopædia Britannica and had a similar rate of "serious errors". These claims have been disputed by Encyclopædia Britannica.
Wikipedia's departure from the expert-driven style of the encyclopedia building mode and the large presence of unacademic contents have 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.
Some 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.
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