I don't use Farcebook so know nothing of how things work.
Nor me - I like my friends logic about not needing facebook 'If I want someone to talk to me, they have my mobile number. If they haven't got my mobile number, I don't want to speak to them'.
I had a 17 year old male model from Oxford wanting to be my friend when I first used it? WTF?
It was at this point that my facebook account was deleted...