I'm an open book. I don't want to bother hiding things from people, it's too much work. I have over a thousand friends on fb: family, schoolmates, childhood friends, exes, office mates, university professors, fb gamers, cs friends... etc etc.
I think people are liable for their own actions.. so if they do something untoward, spill secrets or such, it reflects on what kind of person they are. I still filter those i want in on my friends list especially if they're non-gamers.
RE: Photos
yeah, keeps the housemates off