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This summer, LivingSocial, D.C.’s latest homegrown tech darling, threw a party at Little Miss Whiskey’s to celebrate its new blog, SocialStudies DC (see page TK). Bright-eyed optimism was the prevailing emotion; no one there was rich, yet, but you knew they would be someday, after getting in early with a company now valued at around $6 billion. The party felt like an outtake from The Social Network, somewhere between when Facebook had blown up and when it became a generic verb for “contact me.” Whether the firm is expanding into long-vacant downtown office space, launching blogs, packing restaurants with instant deals, or deferring IPOs to raise its hundreds of millions privately, it’s increasingly clear that LivingSocial isn’t going anywhere anytime soon.