I am on Facebook and limit my contacts to people who are really friends. Not friends of friends and surely not to anyone. It is easy enough I think to set the controls. I don't accept invitations from casual acquaintances or from former work colleagues. Cuts down on clutter. It is such an easy way to share pictures with people who are interested. I never go on chat. Then again, I rarely do chat on here either. It all moves way too fast for me!! For me, Facebook doesn't take the place of the personal contact, just supplements and makes sharing pictures and general information much easier.