We've all been there: the classic group photo, with twelve friends side by side doing their best to look as happy as humanly possible. The first shot is easy — but wait, the guy next to you has their own camera, so it's time for another one. And then another. Soon muscle fatigue kicks in, and those happy smiles fade into grimaces as everyone wonders why isn't an easier way to share their photos. Cue Clixtr , a new location-based photo sharing platform that's launching today at TechCrunch50 . The app is available on the App Store now, and you can download it now for $2.99 here . TechCrunch50 Conference 2009 : September 14-15, 2009, San Francisco