Open Graph is a whole new class of apps, this is the main message that Zuckerberg wants to push forth this week at f8 2011. Open Graph apps allow you to add activity to your news stream without having to press "OK" ever again. No more prompts, ever. With this functionality, "discovering new things through your friends", one of the main goals of the future of apps on Facebook, being accomplished simply. With Open Graph apps you will get a single "permissions" page that'll have you allowing all publishing all at once - Frictionless Experiences and Real-time Serendipity are the big power-points here, and sharing on the fly in real time is the vehicle.