The genesis of the revisions found here was a wiki. Basic Books allowed me to post the original edition of the book in a wiki hosted by Jotspot, and a team of “chapter captains” helped facilitate a conversation about the text. There were some edits to the text itself, and many more valuable comments and criticisms. I then took that text as of the end of 2005 and added my own edits to produce this book. While I wouldn’t go as far as the musician Jeff Tweedy (“Half of it’s you, half is me”), an important part of this is not my work. In recognition of that, I’ve committed the royalties from this book to the nonprofit Creative Commons.