I use both sites, simply because of the reality that prompted the title to this thread.
These days, MySpace has caught up with many of Facebook's starting benefits, and Facebook is looking more and more like MySpace.
I've heard the old speak that Facebook is more "adult" or "mature" than MySpace but would people please clarify what they think that means.
On MySpace you can decorate your personal page - that's true. I've done a Queensryche theme and a pirate theme before.
But in MySpace settings, you can make it so that intensive graphics or music that your friends post on their sites don't download when you visit their pages. I think that's new though. Users might have been driven away from MySpace prior to that when they learned their friend was a raging fan of polka music or something to their distaste. (I saved these music pages from artists who sing about diarhea and vomitting for use later, whenever I get sick from those Nickelback and Linkin Park songs I've been running on MySpace.)
Now Facebook connects you to friends of friends so you can link up your whole posse as well as change privacy settings so that employers can't see your party pictures. But MySpace has caught on to that too. But did they do it too late? Or are these things cyclical and will people return to MySpace when they get really sick of Farmville and Virtual Aquarium updates?