The Wall Street Journal reports that Tyler and Cameron Winklevoss, who claim Mark Zuckerberg stole their idea for Facebook, are getting back into social media. They've invested $1 million in SumZero, a site for professional investors that was co-created by their old friend Divya Narendra. Though Zuckerberg eventually abandoned his commitment to exclusivity, the Winklevii don't have to worry about their site getting too big. Narendra personally rejects 75 percent of the applications, and even the twins only got in once they became owners.
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