See the thread in Off-Topic for opinions
link.
As I said there I use Napster's similar service to try CDs before I buy from Amazon, and to listen to CDs I don't like enough to buy. With Yahoo at half the cost of Napster I'll be checking it out and considering switching to them.
For people that steal music, I suppose it could still be worth it to give you an idea of what CDs to look for on the torrents and usenet
