Who Edits Wikipedia? The CIA, The Vatican, The Democrats, Diebold ...

The BBC says:

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.
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On the profile of Iranian President Mahmoud Ahmadinejad, the tool indicates that a worker on the CIA network reportedly added the exclamation "Wahhhhhh!" before a section on the leader's plans for his presidency.
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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.
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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.

The paragraphs and links have since been reinstated.

Diebold officials have not responded to requests by the BBC for information about the changes.
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Staff at the US Congress have also previously been exposed for editing and removing sensitive information about politicians.

An inquiry was launched after staff for Democratic representative Marty Meehan admitted polishing his biography...

Yes, it's a good place to start your research, and Yes, I'll keep links to it on my sidebar, but NO, PLEASE! Don't believe everything you read!

For example:

WARNING: This page may have been edited by NSA, FBI, DHS, and/or CIA, the Vatican, Diebold, ...