This is great news. Book publishing is progressing, environmentally (we're making no claims about the feel of a printed book in the hand here). But Amazon's MatchBook service is a step backwards. Someone who usually buys digital books may now opt for the physical + digital bundle, meaning that their environmental impact goes way up. The price difference will likely be small. Khaled Hosseini's new book, one of the biggest sellers of 2013, sells on Amazon, at the time of writing, for $14.87 for the hardcover and $10.99 for the Kindle version. Assuming that the digital tie-in is expensive, at $2.99, that means that the digital-only package (which, from the stats, is what most people would buy) is $10.99, but you can have a nice hardcover tossed in for $6.88 extra. And that's the most it could possibly cost! Under seven bucks for a hardcover? Sure, why not? And for lots of books, that could be even less--maybe a couple of dollars, maybe nothing at all. It's very enticing, which is why Amazon's offering it in the first place.