By Jonathan Fildes Science and technology reporter, BBC News
An online tool that claims to reveal the identity of organisations that edit Wikipedia pages has revealed that the CIA was involved in editing entries.
Wikipedia Scanner allegedly shows that workers on the agency's computers made edits to the page of Iran's president.
It also purportedly shows that the Vatican has edited entries about Sinn Fein leader Gerry Adams. The tool, developed by US researchers, trawls a list of 5.3m edits and matches them to the net address of the editor. Meet the designer at http://www.virgil.gr/