On Facebook آپ can block people and آپ can set your account to private so no one can see any of your information unless آپ add them. آپ can also make it so that only آپ can add people, so random people don't go adding you.
Fanpop is محفوظ but there is no real privacy settings, everything, even your club activity is public.
آپ don't have to give your real name یا لوڈ اپ your own تصاویر on Facebook either. I do however because my Facebook is strictly family and دوستوں I know in real life only.