I use Spotify for listening to music, it pushes data through to Last.fm, but I suck at actually checking Last.fm for its (very good) new music recommendations.

So take one of those recommendations from the Last.fm API and email it to me each week. Add affiliate links (iTunes, Amazon, etc.) and take a little cut each time I buy something I discover through this.

Better yet, if Last.fm just implemented this themselves I'd be so happy.