I was interested in the free album offer used to promote the grand re-opening of the Real/Viacom music store. However when I tried to join they said if you place your credit card on the sign up details, we will subscribe you to Real Superpass which would cost you 13.33 a month if you did not cancel. So I decided to leave out my credit card details.
Also Rhapsody also prides itself on people being able to listen to 25 full length songs for free each month as long as you are a member of the site. When I tried to sign on with my details, I was never able to listen to a full length song.
As what they always say in economics, there is always no such thing as a free lunch. There is also coverage in Betanews explaining how disappointing their service is during its first few days it has been open.
For now, I am staying with itunes and Amazon for my major label online music needs. And if I am interested in imported music I will go with 7digital at least.
If you want to try something adventurous and independent, I also recommend emusic.com. I have been a member for two months and downloaded quality music from Cut Copy, Sparks, The Presets and Thom Yorke. There will be a link on my site about emusic.com, if you find their selection good join up today.