Wikipedia is a free-content Internet encyclopedia which is hosted and supported by Nonprofit Wikimedia Foundation. Users who access this site can modify and edit the articles according to their choice as mention in the website policies. Wikipedia is one of the most top ten popular sites which is used by the users. On 15 January 2001, it was launched by Larry Sanger and Jimmy Wales. The site consists of more than 25 million accounts globally out of which about 72,000 active editors are there.