On Facebook anda can block people and anda can set your account to private so no one can see any of your information unless anda add them. anda can also make it so that only anda can add people, so Rawak people don't go adding you.
Fanpop is selamat, peti deposit keselamatan but there is no real privacy settings, everything, even your club activity is public.
anda don't have to give your real name atau muat naik your own foto-foto on Facebook either. I do however because my Facebook is strictly family and Friends I know in real life only.