They aren't totally legal, but a lot of them are actually encouraged by the labels. They seem them as a free way of getting singles by new bands out to a huge audience, and in return for that, they mostly look the other way when the blogs distribute works by bigger artists.
It's a gray area, but one that's been a very good marketing solution for labels -- especially smaller labels.
Peter Steele has the biggest...thingy in all of music. According to disgusting metal hag-girls who saw his Playgirl photos, anyway. Still, his voice rules. Plus they recorded Kane's theme for the new WWF CD. This is the end of the post.