Just checking out a new artist service called GigsWiz (which I learned about on Hypebot). The service is still in beta but it's free for all artists. You open an account and GigsWiz creates your code for a free fan request widget. You can place the widget on your artist website, MySpace and Facebook.

The widget prompts your fans to request you play in their city. GigsWiz stores the requests and then lets you check out all the stats.

I set one up to check it out and looks pretty cool (I attached the picture). I think this could work really well for bands that don't have their own artist website and mailing list yet (this at least would give you some stats about where your fans actually live). Let me know if anyone ends up using it and if it works for you....