The topic of high frequency trading (HFT) of equities and commodities has become all the rage and raises several questions that generate a wide difference of opinion.The topic of high frequency trading (HFT) of equities and commodities has become all the rage. The CFTC, the SEC, the FBI and New York's attorney general are all investigating it. However, the topic has really taken off as a result of financial writer Michael Lewis's latest book entitled "Flash Boys: A Wall Street Revolt," which is about a group of computer nerds who use HFT programs to gain an unfair advantage over less technologically-adept investors. The financial press is filled with the topic, including the lead editorial in today's Wall Street Journal. It is a subject, th...