The killer app for any social network is its users, not its developer API. No one joins a social network so they can rate movies, or turn their friends into zombies, or declare allegiance to their favorite sports club. The reason most people join social networks is because their friends are already there, all that other stuff just enhances their experience once they’re in. Users are what make social networks go. (..) Facebook still has the two killer features of any successful social network: users and a good experience. - Josh Catone / ReadWriteWeb

É esperar para ver! Será que o OpenSocial não vai interferir no crescimento do Facebook?