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Zach Klein, one of the founders of Connected Ventures, started a photo group on Flickr called "Chest Hair Party" as a joke three years ago. A redesign of Flickr's homepage alerted him to its takeover by a set of Flickr users who take chest hair rather more seriously. Oh, how innocent! San Franciscans, whose city hosts every imaginable gay subculture, take the bears who walk among them for granted. But New Yorkers are only starting to discover this clique of hairy homosexuals. (Bear models were in vogue on last fall's runways.) Zach, if you need to learn more, take the subway to Christopher Street and walk west until you hit Ty's. If you get any questions, just say you're an "otter." (Photo via Secret Enemy Hideout)