I remember something along these lines came up quite a while back on HN, and later some Facebook data scientists satirized the Princeton researcher's methodology where they showed how Princeton would have only 4 students in 2017.<p>On a more practical note, I despise Facebook, but I don't think it is going to fade into oblivion. It may become less relevant, but it will never fully disappear, especially as it snaps up these new social networking channels like WhatsApp and Oculus.