See Who's Editing Wikipedia - Diebold, the CIA, a Campaign

From "Wired" - By John Borland 08.14.07 2:00 AM
(Thanks to Tami for this link)
More on Wikipedia Scanner, companies polishing up their Wikipedia entries and government spooks rewriting history on wiki sites.
http://www.wired.com/politics/onlinerights/news/2007/08/wiki_tracker