Woah. Did y'all see this story at the Huff Post: E-books vs. Traditional Books? The original story was in The New York Times: Math of Publishing Meets the E-Book. The graphic they used kind of says it all!
Note: I'm not including the graphic because I don't have copyright permission. But I'm wondering how the Huff Post does that? Yes they give credit, but as far as I know, that's not okay. Anybody know how they're getting away with that?