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With Facebook friends like these, who needs enemies? Noah Kagan, who left his job at the social network abruptly in mid-2006, now has a Facebook group in his honor: "Boycott Facebook until Noah Kagan is re-hired!" Valley prankster and Friendster founder Jonathan Abrams created the group. We pinged Kagan, who's now working happily at online personal-finance startup and blogging at Kagan, when pinged on IM, was as bemused as we were to hear about the group, but had no idea why Abrams was starting it a year after his departure. The Facebook group, however, might not be telling the whole story about the Facebooker's departure: A well-placed tipster says Kagan was fired for leaking company secrets to TechCrunch editor Michael Arrington.