It's good to park your profile their with just your name and picture as a means for frends to find you (being that email addresses change all the time).

I did an experiment with FaceBook & MySpace. I signed and posted my picture and left public but said nothing. I never log in. I only ever received sex and other spam 'pokes', trolls, and a smattering of about a half dozen friends who likewise created a page out of curiosity (hype), did a thing or two and then left it abandoned on the expressway as well.

Of course for a teeny-booper trapped in a boring class that is lucky enough to have an iPhone, FaceBook can seem interesting. Especially since teeny-boopers are so interested in the impression they make on other teeny-boopers anyway.