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Does anyone here answer to the screenname of Spitfire Hobbit? (You can shoot me a PM if you don't want to identify yourself publicly.) Someone located me on my email address, which I have been careful not to spread around, and wants to add me on IM. I don't want to accept if I don't know the person (and maybe not unless we know each other fairly well).

EDIT: Nevermind, case closed. Subject identified.