Got room for a location-based social networking app in your life? Like cute kangaroos wallabies? Then Gowalla is for you. You ‘check in’ at user-created locations to gather virtual ‘pins’. The whole thing is supposed to be a way to share fun places with your friends, or make new friends. There’s an iPhone app, with Android reportedly on the way — use their mobile site for now, you Nexus One types out there.