[spullara]

The network and habit effects for this kind of online business are incredible. Everyone has been expecting Yahoo to die for ages now but it keeps on churning out ~$5B in revenue and ~$1B in profit year after year and that is only using email lock-in and legacy home page sets. My guess is that social graph lock-in is even more effective. BTW, it was hardly "first mover", Zuck was worried about being "Friendstered" from the very beginning, thus the slow roll out college by college and the monstrous investments in infrastructure. I very much doubt that the social graph (family and friends) is extractable from Facebook at this point.