> Your first posting didn't mention that you had spot-checked against the book, and I assumed that the infringement you were talking about was from xkcd.com and

> Your first posting didn't mention that you had spot-checked against the book, and I assumed that the infringement you were talking about was from xkcd.com and not from the book. Fair enough, I could have been more clear. > Another minor detail; the xkcd.com copyright license may be less restrictive than most, but it not free. That's an aspect of "free" and open-source that many people find confusing -- the person granting those permissions normally still wants control and fair attribution. > I personally think the author doesn't much care about the matter. A review of the other book reviews shows they are more like digests, with many long, unmodified quotes and very little review or commentary. Yes, or maybe he realizes nothing can be done, that it's a sign of the times. But I doubt that Houghton Mifflin's stockholders would go along if they were fully aware of what it implies about paper-book copyrights.