The site also indicates that a computer owned by the US Democratic Party was used to make changes to the site of right-wing talk show host Rush Limbaugh. The changes brand Mr Limbaugh as "idiotic," a "racist", and a "bigot". An entry about his audience now reads: "Most of them are legally retarded."
The IP address is registered in the name of the Democratic National Headquarters.
Wikipedia Scanner also points the finger at commercial organisations that have modified entries about the pages. One in particular is Diebold, the company that supplied electronic voting machines for the controversial US election in 2000.
In October 2005, a person using a Diebold computer removed paragraphs about Walden O'Dell, chief executive of the company, which revealed that he had been "a top fund-raiser" for George Bush.
A month later, other paragraphs and links to stories about the alleged rigging of the 2000 election were also removed.