Read the book before you write an ariticle about it.
In the book a trader from Canada gets curious when he goes to make large trades and sees the prices disappear before he can make them. After a long investigation he finds that brokerage houses are selling the info on his trades to HFT's that co-locate and they buy the stock he wants at the price he wants before he can complete his trade. He then needs to buy the same stock from them at an inflated price.
Ironically when humans do this it is illegal. It is not fair or ethical. The author would know that if he read the book, instead now he looks like an idiot.
Biting the hand that feeds IT
