What if none of your MP3s were acquired legally?
no problem. i signed up and tried it. its not just for amazon bought songs although the amazon bought stuff doesnt count towards your size limit (get 5GB free i think you can upgrade to 20GB if you buy an album on amazon).
right now im not going to mess with it but once they get an iphone app working and more people jump on and drive prices down a little i will prob use it to back up all my mp3s on there unless the eventual apple version is cheaper
i have all my mp3s backup to an external hd but would be nice to have them backed up offsite.