Wikipedia (IPA: /ˌwɪkɨˈpiːdiə/, /ˌwiːkiˈpiːdiə/, /ˌwɪkiˈpiːdiə/ or /ˌwiːkiˈpeɪdiə/) (Audio (U.S.) ) is a free, multilingual, open content encyclopedia project operated by the non-profit Wikimedia Foundation. Its name is a portmanteau of the words wiki (a type of collaborative website) and encyclopedia. Launched in 2001 by Jimmy Wales and Larry Sanger, it is the largest, fastest growing and most popular general reference work currently available on the Internet.As of December 2007, Wikipedia had approximately 9.25 million articles in 253 languages, comprising a combined total of over 1.74 billion words for all Wikipedias. The English Wikipedia edition passed the 2,000,000 article mark on September 9, 2007, and as of February 4, 2008 it had over 2,210,000 articles consisting of over 961,000,000 words. Wikipedia's articles have been written collaboratively by volunteers around the world, and the vast majority of its articles can be edited by anyone with access to the Internet. Having steadily risen in popularity since its inception, it currently ranks among the top ten most-visited websites worldwide.Critics have questioned Wikipedia's reliability and accuracy, citing its open nature. The criticism is centered on its susceptibility to vandalism, such as the insertion of profanities or random letters into articles, and the addition of spurious or unverified information; uneven quality, systemic bias and inconsistencies; and for favoring consensus over credentials in its editorial process. Scholarly work suggests that vandalism is generally short-lived.In addition to being an encyclopedic reference, Wikipedia has received major media attention as an online source of breaking news as it is constantly updated. When Time Magazine recognized "You" as their Person of the Year 2006, praising the accelerating success of on-line collaboration and interaction by millions of users around the world, Wikipedia was the first particular "Web 2.0" service mentioned, followed by YouTube and MySpace.