i don't think enough artists realize the promotional power of the internet... there are so many live acts that never release sets online. i think the problem for some acts is that they simply don't do jackshite live, so the set is basically full tunes being played one after another. that allows people to cut up the MP3 and play the tunes out. if you actually do a good live act, and manipulate the music a lot, then just release the sets in lower bitrates and people won't be able to use them in the same way.