New site Mflow is beta-testing, enter code 6BPJC7 for the download.
Buy and listen to songs, and add them to your list of recommendations, or 'flow'.
Acquire a group of peers who follow your 'flow', and they can listen to any of your recommendations once for free. If they like-and subsequently buy- any tracks on your 'flow' you get 20% of the sale :-)
Sounds good, you never know with this sort of thing, could be rubbish or great!!