This book was very interesting. It seems to be a history of information theory, and the author weaves together strands from a number of different disciplines, bringing to life what could be very dry. But once I'd finished it, I felt somewhat disappointed. I felt that he gave very short shrift to the internet, despite some interesting sections on wikipedia. How can you write a book on Information and not spend a good part of it discussing the internet. Of course, I'm a techie, so I'm somewhat biased, but I felt a little cheated.
Also, after I finished the book I felt a little bit of "So?" If he was trying to make some kind of point, I'm not sure I got it. Despite that, I think it's worth reading, for the historical perspective if nothing else, just don't expect life-changing, or even thought changing, revelations.