Well, the only people I know who use Myspace are those who play in a music band. It might be different in the US (I live in France), but the impression I have is that Myspace is more a gallery for budding artists than a real social service..
The thing is that since many people are on facebook now, if you want to share something with your friends, it's much easier to do it on facebook than on Myspace..
Again, that's how I see things from France, but I'm curious to know how it goes elsewhere..
Same in the UK. I only really ever used Myspace for music (either checking out bands or posting my own songs in a fit of vanity). I don't think Myspace ever achieved critical mass as a social network here, certainly not among people that I know.
The thing is that since many people are on facebook now, if you want to share something with your friends, it's much easier to do it on facebook than on Myspace..
Again, that's how I see things from France, but I'm curious to know how it goes elsewhere..