Lawrence Lessig - Book Free for Download

I was just checking out the 2001 Lawrence Lessig book The Future of Ideas which is his most recent to have been made available for free download under Creative Commons licensing, as mentioned the other day on Slaw. I was impressed that I was not required to fill out any forms or even leave an email address behind in order to download it. Fantastic idea! This is a great way to revitalize interest in a book that may no longer be on mainstream bookstore shelves. He apparently has done this with some of his more recent books as well. Kudos!