I listen to the flash player on
The Hype Machine quite a lot, which aggregates from all the music blogs out there. I like doing that just for the heck of listening to bands that for one reason or another I've resisted, so that I can decide definitively whether or not I like what I hear.
I guess without music blogs there would be no Hype Machine (

), but I do think Last FM does a good job of catering to that kind of need anyway.
In short, I'm glad that they're there, but in reality I don't really download from them all that much.

Kate