I disagree. As months go by, it's going to be even harder for anyone to come up with a social network as big as FB. Why ? FB's critical mass! As it's been said, all that differentiates Facebook for an individual user is the presence of that users friend’s on Facebook — which forces them to use Facebook to connect with them. And this is precisely why FB is not a founding member of the OpenSocial foundation. Facebook is threatened by OpenSocial’s ultimate aim of connecting user profiles and enabling users to easily manage and port their data across any social network.