Facebook makes no effort to protect the privacy of its users - any user's security is only as strong as the weakest "friends list" member. In other words, if you have a "friend" that has a public profile, then your info is basically at risk of being public also.
A monumental wast of time for humanity. Pick up the phone or send an email to stay in touch. Easier and safer.
Good Social Networking site but not a safe place for children's & girls ... you need to be more aware while posting personal pictures, ad while using applications (facebook apps)