Keep in mind that unless you make yourself invisible to everyone except your friends on FB, people can still find you in a search and see your name, main photo, a selection of your friends, and some of your interests and pages. People can tell a LOT and make judgement calls from just these little bits of information. If you go private, make sure that you are completely private except to your friends.
Honeychile wrote: <<Private = Discreet. Discreet = Mature.>> LOVE THAT. So true.