Bootleg browser

Bootleg Browser is a new resource that lists links to MP3 downloads of concerts -- currently featuring shows from nearly 350 artists. I'm interested to know how readers feel about the ethics of concert bootlegs. Personally, unless an artist has specifically stated that they don't want their concerts to be recorded and traded, I have a hard time understanding why anyone would object. There's no real way that bootleg trading can hurt an artist, and plenty of ways that it can help. Doubtless some of you disagree, and I'd like to hear from you. Write to me.