I am not sure how things like this will change our lives to be honest, I think it is too early to say which will have a bigger impact. To your latter point, I

I am not sure how things like this will change our lives to be honest, I think it is too early to say which will have a bigger impact. To your latter point, I can understand that most people use social networks to merely chat and browse drunken photos of friends, but that is like saying that all the invention of the telephone did was make it easier to share mindless banter with your friends. There are fringe benefits that arise from these kinds of technologies that could be really impactful. Twitter's use during the Arab Spring comes to mind as the most recent example of this. I admit that Facebook doesn't provide any great "technological"/scientific achievement, but it does have a strong network effect supporting it; and that is something that can be impactful in a very productive sense.