Startups YC Demo Day Session 1: PlanGrid, Medigram, Zillabyte, HireArt, Flutter, Givespark, Popset, SendHub, Screenleap, Coderwall, LVL6 We’re here live at the Computer History Museum in Mountain View, Calif., where top early-stage fund Y Combinator is kicking off its biggest demo day yet — 66 companies are in this Winter 2012 class, and all of them are presenting (although not all of them are rea
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