That would be nice indeed. But such a social network would have weaker network effects, and would probably be overtaken by a larger network that had growth-orie

That would be nice indeed. But such a social network would have weaker network effects, and would probably be overtaken by a larger network that had growth-oriented defaults. This is the kind of tragedy of the commons that could probably be fixed through legislation or regulation -- I don't think a privacy focused social network could take on Facebook or Twitter in this day and age.