Wikipedia is an online encyclopedia that "anyone can edit".
ProjectEdit
HistoryEdit
Wikipedia was started in January 2001. Several software changes were made before converting to today's MediaWiki. The community grew rapidly until 2007, when it started to decline.
VisionEdit
Larry Sanger,
co-founder of Wikipedia
ImpactEdit
ControversyEdit
One of the main controversies is that anyone can edit it, thus increasing the chance for factual errors.