Reporting of child pornography images on Wikimedia Commons caused by his history with Wikipedia and his own competing online encyclopedia, Citizendium. Sanger denied that the letter was an attempt to undermine Wikipedia, but did confirm it was an attempt to force a policy change for labeling or eliminating "adult" content on Wikipedia. Things escalated when Fox News began reporting on the issue. In response Jimmy Wales, co-founder of Wikipedia, and other administrators began deleting images "en masse", with Fox News reporting that a new policy change was underway. Days later Wales voluntarily relinquished his administrative powers on Commons under heavy criticism from the Wikimedia community. Fox News also
Jimmy Wales the Nupedia and Wikipedia projects until Bomis discontinued funding for his position in February 2002; Sanger resigned as editor-in-chief of Nupedia and as "chief organizer" of Wikipedia on March 1 of that year. Early on, Bomis supplied the financial backing for Wikipedia, and entertained the notion of placing advertisements on Wikipedia before costs were reduced with Sanger's departure and plans for a nonprofit foundation were advanced instead. Wales has asserted that he is the sole founder of Wikipedia, and has publicly disputed Sanger's designation as a co-founder. Sanger and Wales were identified as co-founders at least as early as September