I'm halfway done with the book and I'm pretty disappointed. There's just too much filler information, probably inserted from the author's grad school thesis. The personal insights of the guys that he interviews are somewhat vague. Obviously no one wants to discuss strategy. It's too technical. I wouldn't recommend this book... too much filler information. Although it's well organized in the book (mainly as a timeline) you can find it on the web.
That's NOT the case. The issue is that It's PROPRIETARY....not technical. The value of the book to me was to see the mention of all of the "players" in the industry. Indeed, he uses the book as a segway into his lucrative seminar business: http://www.hftleadersforum.com/
Dude - if you are obsessing over 16 bucks, you shouldn't be trading......now if you spend 16 HUNDRED on his seminar and it proves to be a dud, then I can understand your concern.
I'm not... I just don't like reading books that turn out to be pitchbooks for something. Earlier this year I bought "The Other Side of Wall Street" by the minyanville guy. It was also $16 but I'm still not happy paying for garbage, at any cost. At least Todd's book was short and a better story... not a good book though.