If you were to log in, you'd be able to get more information on your fellow community member.
I have had the same thought about music. At some point the music companies are going to do an end run around Napster and put encrypted music on the Internet. Suppose you buy a CD, hate it, and never listen to it again. You just wasted $15. It would be better to pay $30 a month and obtain the right to listen to any music. Artists would be paid based what people listened to most. Congress might have to grant a partial anti-trust exemption to enable music companies to set this up.