[Huh. Pondering that, she goes back to scratching Edge's ears, because he didn't seem to like it when she stopped.]

Good question. I guess because it appeals to a lot of audiences? You know, magic, action, adventure, mystery and horror and all that. And it probably helps that it started getting popular around the same time the internet did, so people from around the world could get together and talk about how great it was. That's my best guess, anyway.