I find this article pretty void of content.
The title is a bit of a give way - to people who work in the space the "Flash Boys" book is easy to see as atrociously inaccurate.
I recommend considering the detailed rebuttal to this type of article, as well as that book in particular: "Flash Boys: Not so Fast" http://www.amazon.com/Flash-Boys-Insiders-Perspective-High-F...