And see the books.google.com page for previews of the interior. (And its word cloud. I am very fond of its word cloud.) At some point later this year I will Creative-Commons-e-publish this new 2.0 version of the book. (The 1.0 version is already available .) I have a PDF of the printed version, which is terrific, but full of graphics. Are there any halfway decent PDF→epub tools out there yet?