FACEBOOK vs MYSPACE

At the urging of my buddy Steven, I finally created my Facebook profile. I'm a dinosaur compared to most of the users, but that dynamic will change now that the company has opened the site to non college-students. These social networking sites have gotten some bad press but Facebook andMyspace can be useful. I'm finally in the habit of checking my Myspace messages. I wonder which one of the two I will use more or if I'll stop using one in favor of the other...Do you have a preference or do you think both of them are stupid?