Jorm: I also wouldn't mind knowing that my music is getting out there and being played and sung along to around the world.
Can't speak much about RBN yet but I can tell you that thru XNA those indie game developers know how many times their games have been downloaded as a trial and then purchased. It's not made public though
Not sure we'll have access to that data.
Xbox Live/PSN - iruhlman
Rock Band Network