Tried "the wombats." Artist not found. "Clutch" found results, but the first three songs were pretty painful. "Mos Def" and I'm happy.

What's behind the recommendations? Is it manual (like Pandora)?

How are you approving music? There's a reason some new music never gets heard. I'd be really interested in hearing how you solved the quality control challenge.

At some point, an artist is going to stop being "up & coming."

Why not use Open Graph and Connect for likes and logins?

I think I've been listening for about 25 minutes. I like listening to it, but visual seems pretty disconnected. I really like the way rdio is doing their playlist and controls.