Free $10 from Rhapsody
Rhapsody is offering a $10 credit to the first 100,000 people who open an account with them by July 4th. The credit must be used by the 4th. You need to enter a credit card number to sign up. Their albums are $9.99, so it’s pretty much a “Get a Free Album” deal. While I signed up to get the offer, I have never used the service before and can’t vouch for it.
I mainly use Emusic but they have a lot of holes in their selection due to their business model (mostly independent labels only). I’ll probably get Feist, Toumani Diabate, or Joshua Bell (assuming Rhapsody carries them).
(Update: I read that you need to email or call to cancel your account. Just FYI.)