Christopher Salazar is a master at Facebook and MySpace, being in his early 20s most of his network are using these tools to communicate. I trust him in giving great feedback on this topic, and you should too.
You don’t know the difference between Facebook and MySpace? He compares and contrasts MySpace and Facebook in this very informative post.
It’s pretty clear to me that there’s a need for both communties, they both offer unique features for different purposes. I recently visited Facebook HQ, and coincidently joined Facebook as well. I’ve learned that I don’t use Facebook that much, why? I have a blog, and I don’t have to ‘connect to my friends’ to know who they are.