P2P triggered purchases?
http://www.nuclearelephant.com/projects/sharing/
This is a place where people can post their purchases if that purchase was influenced by something you’ve downloaded via P2P. There are some studies that shows that P2P file share is actually boosting the music sales, not hurting. This is one person’s attempt to show that it is a possibility. While I don’t know of the effectiveness of this data, I’ve encountered something neat.
I just found the site yesterday via slashdot. Then, just today, shiorichan made a purchase that was motivated by mp3 albums she had downloaded. I was happy I could share this little site with her.