I just saw this on boingboing: Authors Cory Doctorow and Charlie Stross have a new book out, Rapture of the Nerds, and they are planning on putting up a website where readers can download free, licensed e-book copies. If you are so moved, you can buy a book for a library, teacher, instructor (etc.) who would like a hardcover version.
And if you’re an educator who is interested in getting on the list for a free hardcover copy of the book, drop them a line. Sounds interesting.