Sprinkles Cupcakes is tweeting away, eager to hook customers by luring them in with free cupcakes. But there's a catch, of course, and a seriously goofy one at that. If you really want the goods, you must whisper a newly-updated phrase (imparted via Twitter) to the person behind the Sprinkles counter. Your cupcakes have passwords. How cute. It's like Skull and Bones for the 6 year-old crowd.