bcrowell writes "Remember e-books, anti-books, and print-on-demand books? They didn't pan out. The surprise success story is free books." Of course, this defines "success" as number of readers, not in terms of monetary profits. E-books and their ilk were concentrating on the latter definition, rather than the former. Still, it's good to see free books preferred in some circles based on their merit, and not just the cost.