How is this news? I guess for the 'masses' who are not even the slightest bit knowledgeable of the current market structure. Everybody knows HFT exists and how they skim off cents, or used to stuff quotes, etc. I mean, there has already been plenty of congressional hearings already on the matter regarding HFT.
Seems more like self promotion to me (the book & the exchange).
I think more problematic isn't HFT per se, but algorithmic trading. It is the algorithmic trading nature of the market that drives price overshoots. So it exaggerates uptrends and exaggerates downtrend price movements because the algos pile on trends and push the prices further out. I think more investors have lost money because of price overshoots (up or down) than the fact HFT is scalping a few cents per share when performing market making functions.