It's not a valid question for any Stack Exchange site I'm afraid. It's not a music question, it's a shopping request where there is no correct answer, and even if one answer was ideal, it'd likely it'll be replaced when a new service comes along, making that answer incorrect / obsolete.
The point is that it's not a problem you need solving, it's a resource issue. You don't know where to go to find out about 'x'. If your question was specifically about Myspace (that is, does Myspace still contain enough active users to make it worth the time to manage and update my page regularly) then that's possibly on topic on music.se (it's best to check with them though as they may disagree), but asking for suggestions / examples / alternatives isn't on topic on any Stack Exchange site really.
For the record, the new Myspace is in beta, and it's pretty interesting and very music focused so maybe Myspace is going to be a good place for bands to post to again after all.