MySpace, YourSpace

I've been hearing about authors and publishers creating pages on MySpace, and I have to admit it baffles me. What makes MySpace different and/or better than a regular website or blog? Inquiring minds want to know. I considered making a page but ultimately decided it would be one more place I'd have to update. For now, I'm not doing it, but I'd love to hear about the advantages from someone who is at MySpace.