For a different twist on sharing, check out <www.weedshare.com>. This company encourages you to share files in their special format. You can listen to a song 3 times for free. On the 4th play, you're asked to buy it (at whatever price the artist wants to charge). If you buy it, the artist gets 50% of the sale, and the three people above you in the distribution chain each get a commission. If you send it on to other people and they buy it, you make money.