New Wikipedia-inspired projects – such as Citizendium, Scholarpedia, Conservapedia, and Google's Knol where the articles are a little more essayistic – have been started to address perceived limitations of Wikipedia, such as its policies on peer review, original research, and commercial advertising. Wikinfo does not require a neutral point of view and allows original research. Various other wiki-encyclopedia projects have been started, largely under a different philosophy from the open and NPOV editorial model of Wikipedia. Later that year, Wales announced that Wikipedia would not display advertisements, and its website was moved to. 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. English Wikipedia passed the two million-article mark on September 9, 2007, making it the largest encyclopedia ever assembled, eclipsing even the 1407 Yongle Encyclopedia, which had held the record for exactly 600 years. Nupedia and Wikipedia coexisted until the former's servers were taken down permanently in 2003, and its text was incorporated into Wikipedia.
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By late 2002, it had reached 26 language editions, 46 by the end of 2003, and 161 by the final days of 2004. It grew to approximately 20,000 articles and 18 language editions by the end of 2001. Wikipedia gained early contributors from Nupedia, Slashdot postings, and web search engine indexing. Number of articles in the English Wikipedia plotted against a Gompertz function trending to 4.4 million articles. A 2005 investigation in Nature showed that the science articles they compared came close to the level of accuracy of Encyclopædia Britannica and had a similar rate of "serious errors". Other criticisms center on its susceptibility to vandalism and the addition of spurious or unverified information though some scholarly work suggests that vandalism is generally short-lived. Īlthough 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), and because it favors consensus over credentials in its editorial processes, its reliability and accuracy are also targeted. Students have been assigned to write Wikipedia articles as an exercise in clearly and succinctly explaining difficult concepts to an uninitiated audience. Wikipedia has also been praised as a news source because of how quickly articles about recent events appear. It cited Wikipedia as an example, in addition to YouTube, MySpace, and Facebook.
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In its 2006 Person of the Year article, Time magazine recognized the rapid growth of online collaboration and interaction by millions of people around the world. Wikipedia's departure from the expert-driven style of encyclopedia building and the large presence of unacademic content has often been noted. Sanger coined the name Wikipedia, which is a portmanteau of wiki (a technology for creating collaborative websites, from the Hawaiian word wiki, meaning "quick") and encyclo pedia. Wikipedia was launched in January 2001 by Jimmy Wales and Larry Sanger. It is estimated that Wikipedia receives 2.7 billion monthly pageviews from the United States alone. It has become the largest and most popular general reference work on the Internet, ranking sixth globally among all websites on Alexa and having an estimated 365 million readers worldwide.
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As of July 2011, there are editions of Wikipedia in 282 languages. Almost all of its articles can be edited by anyone with access to the site, and it has about 100,000 regularly active contributors. Its 20 million articles (over 3.8 million in English) have been written collaboratively by volunteers around the world. Wikipedia ( i / ˌ w ɪ k ɨ ˈ p iː d i ə / or i / ˌ w ɪ k i ˈ p iː d i ə / wik-i- pee-dee-ə) is a free, web-based, collaborative, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Share-Alike 3.0 (most text also dual-licensed under GFDL) Optional (required only for certain tasks such as editing protected pages, creating pages or uploading files) Screenshot of Wikipedia's multilingual portal.