I look at it briefly most days. I use it mostly for the group's I'm in - gaming, music and films and some weight training groups. They're people from all over the world, which is good.
I very very rarely post on it, never put pics of my kids up - the way I see it they didn't ask to have their pictures posted, and maybe when they're older they won't have wanted pics of themselves online. Always find it weird that parents are constantly throwing on pics of their kids - is that really a good thing? Maybe the odd family holiday pic, or birthday, but nothing else.