This is a great service, although IP autodetect didn't work for me. It wasn't a problem to search for London (it didn't go to Canada, at least!).

The map could be sized differently depending on resolution, so you don't have to scroll.

The genre list needs an overhaul. If you search for Ambient, it returns bands that claim to be Metal / Ambient, which is not the same! I like to find things by genre.

Is this primarily a nicer interface to myspace music?