What the heck is a blook?
According to Tom Evslin, it is a book published in blog format. But it is more than just a simple format change: Evslin has written a novel, Hackoff.com, that makes the entire blog experience, including comments, an integral part of the content, according to Fred Wilson.
Unfortunately, the site seems to be down right now, but I intend to check it out when it is back up…