Do you use myspace?
I think its hard when you are over 25... I have a myspace page and facebook page but I'm not really sure what they are for.
Myspace has connected me with a couple of funky boutiques, so I can see the logic there. But facebook is a little more personal, so I have real friends connecting with me (especially high school friends who I have not seen in almost 20 years) as well as people I have no idea of but feel bad if I don't make them 'friends'! Ridiculous really.