Ah right, I do not consider that a feasible thing right now. How would facebook (or the non US equivalent) work if data was encrypted on everyone's PC. There i

Ah right, I do not consider that a feasible thing right now. How would facebook (or the non US equivalent) work if data was encrypted on everyone's PC. There is no PKI that would support that at the moment (Although a social network that also acts as a PKI is an interesting idea.)