Looking for friends?

Social network like friendset are new ways of meeting some friends. We can enter in communication with people that are friends of our friends.
The problem is that people can hide behind their computer, they can play, they can lie; or they can say everything, as if talking to an idealistic person. We can know more people than before, but, thus, what means knowing?
We can say "friends of my friends are my friends", and so do we meet very different people?
Friendset, Meetic,..., and many others websites make us choose who we want to meet.
So, e-relationships will not be, as it seems, the realisation of that eternal dream of worldwide friendship.