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You see, Wales' personally appointed "Arbitration Committee" on Wikipedia was as recently as January 2010 extensively discussing on a very leaky mailing list how they'd used IP address data to snoop into my city of residence, verify my place of employment, learn what operating system I use, which web browser, which toolbar was installed, and even track how I traveled back to my home town for Thanksgiving. Only one reader of that mailing list, which counts Jimmy Wales among the many recipients, stopped for even a moment to ask, "Safe to post [CheckUser] result info here?" The sheepish reply from Committee member and server at Connor's Steak and Seafood, Keegan Peterzell, was a damning "They have been before. Yes, this list leaks."
Keegan is on the Audit Subcommittee, not the actual ArbCom. While I suppose this means he's technically part of ArbCom as AUSC is a "sub"committee, I think your article is a little misleading.