EFF: The Customer Is Always Wrong: A User's Guide to DRM in Online Music
A good article for anyone who buys music through many of the popular online services.
One problem I have, as I have said before, digital rights need to make more sense. We need to be able to EASILY move things to a new machine when we buy them, upgrade software, etc. Plus, and this is important especially for iPod Shuffle users, you need to be able to copy it to a device multiple times. In fact it should be able to handle several devices.