Last fm

I think that sites like this are really useful, at least for me, when you want to buy something, but you haven't heard anything from the album. I personally do not think that cd's are dead, I still buy a ton of them, however sites like this are useful in many ways. You can listen to music that you may not want to buy the whole album, you can listen at work when you are on your computer, or you can sample some tracks of a cd you may want to buy but haven't heard yet.