Another thought... Bands are starting to use the "Pages" section of facebook heavily. Since they allow status updates, there is a lot of good information tied to them. A lot of promos as well.
Trent Reznor is one of the twitters that Q101 was talking about, and Billy Corgan(sp?) from the Smashing Pumpkins.
Twitter and other things like this is a good source for PR and marketing and instant news info.