History of Wikipedia covertly alter Wikipedia biographies – came to public attention, leading to the resignation of the campaign manager. Nonetheless, Wikipedia was rated as one of the top five global brands of 2006. Jimmy Wales indicated at Wikimania 2006 that Wikipedia had achieved sufficient volume and called for an emphasis on quality, perhaps best expressed in the call for . A new privilege, "oversight", was created, allowing specific versions of archived pages with unacceptable content to be marked as non-viewable. Semi-protection against anonymous vandalism, introduced in 2005, proved more popular than expected, with over 1,000 pages being semi-protected at any given time
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