Reporting of child pornography images on Wikimedia Commons 2006 he founded Citizendium, a competitor to Wikipedia. While Sanger has gone on the record that this was not an attack on Wikipedia, nor a way to boost readership of his own free web-based collaborative encyclopedia, there is a significant level of skepticism that Sanger acted without malice. Sanger has had an antagonistic history against Wikipedia since leaving, including criticism of Wikipedia co-founder Wales, and of the Wikipedia community: "The ... community had essentially been taken over by trolls to a great extent. That was a real problem, and Jimmy Wales absolutely refused to do anything about it." Fox News
Jimmy Wales edited his own biographical entry on the English Wikipedia. Writer Rogers Cadenhead drew attention to logs showing that in his edits to the page, Wales had removed references to Sanger as the co-founder of Wikipedia. Sanger commented that "having seen edits like this, it does seem that Jimmy is attempting to rewrite history. But this is a futile process because in our brave new world of transparent activity and maximum communication, the truth will out." Wales was also observed to have modified references to Bomis in a way that was characterized as downplaying the sexual nature of some of his