Do Open-Source Books Work?

bcrowell writes: "Whose version of the digital book is destined for world conquest? Pure and virtuous open-source books don't seem to have spread beyond the computer-science ghetto, while the dark side of the force is represented by the advent of mandatory antibooks in dental school. This article aims to move beyond the moralizing and tackle the real issues that are playing out in the free-book arena." Interesting to see this article come from someone who has himself written such a book.