In the sub-world of Heavy Metal bands I know use MySpace and Facebook and see much more traction/interaction from their MySpace page. Their FB presence really only help fans add tour dates to their calendar. The MS page is used for contacting the band and listening to new/demo tracks.
It could be that people see FB as a personal network for them and their friends whereas MS is used for music discovery. I think you'd have to work in FB or MS to really know.
It could be that people see FB as a personal network for them and their friends whereas MS is used for music discovery. I think you'd have to work in FB or MS to really know.