I've been using Facebook that way since I started with it and I've been happy, but began using it less and less. I'll probably cut a load of the 'friends' I've got on there (people I've met a few times etc) and try and clean it up a bit.

Mostly it's that old quote "Hell is other people", and other people tend to post crap, invite you to every group under the Sun and invite you to play every game they see.