I don't use either site, but I used to use MySpace, and I've logged into a Facebook. There's absolutely nothing better about Facebook, it's confusing.
i don't have an account in facebook but i heard that it's good! i have an inactive account in myspace. I did not like it that much. Another site that is similar to those two that i use is multiply.com ttp://alinkperpost.blogspot.com/
I've had accounts on both and I'm much happier with the Facebook interface. Myspace is too much of a mess and I could never find anyone on there.
Only if you get addicted to them. lol I can't believe some people spend significant amounts of their days on them.
Myspace actually opened up many doors for me with my design work. So for that, I give it credit! Fackbook is better for personal friends only.