How "clean" is wikipedia?

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By matching users' IP addresses with the public database of addresses registered to different corporations, Griffith's "Wikiscanner" revealed widespread corporate meddling on Wikipedia, as companies attempted to add marketing pitches to their own entries, or hide controversies.
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As a tool for stripping away the anonymity of Web users, Wikiwatcher might strike some as an invasion of privacy. But Marc Rotenberg, director of the Electronic Privacy Information Center, put the onus on Wikipedia, not hackers. "This simply shows that Wikipedia needs to make more robust anonymity tools," Rotenberg says. "There's obviously something wrong if a hacker can reveal this kind of information on users."
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But Griffith says his intention wasn't to encourage better privacy protection on Wikipedia. Instead, he argues that removing anonymity makes the site's information more accurate.
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Article here.