Blippy launched a few months ago as a service that lets you plug in your credit card and broadcasts online every single purchase you make. For people looking for public accountability about what they spend money on, or just another social networking vanity trip, it’s pretty neat. But maybe there’s certain things that come in brown paper bags that you don’t want your mother stumbling across. Rolling out along with a Facebook-esque site redesign, Blippy has added a new privacy feature that lets you manually screen out individual purchases before the hit the net, and your mom hits the roof. To use it, [More]