I thought the same thing before I did the whole myspace thing. Then I kind of started one as a joke, but started getting friend requests with a bunch of friends I went to High School with. Myspace is a great way to keep up with friends and family that you always talk to on a regular basis. With me being in the Air Force, I do quite a bit of traveling. Just in the last few years I've lived in two different states, and a different country. Myspace has helped keep in touch with a lot of great people that I've met through my career.
So no. You're not a 13 year old girl...unless you really are, I have no idea...