I think they are onto something here. How good would this be: You go to a bookstore (e.g. Dymocks down here), browse books, find the one you want, go to the register and say "I'd like this in e-book format please". They print out a little docket with your code which you then pay for and use to download your book ...
And you save a couple of trees over in Indonesia at the same! Instant karma points