We ask the the S.E.C. to prevent the use of direct feeds, which give High-Frequency Trading "HFT" an advantage over retail investors and some institutional investors. The direct feed used by HFT is faster than the feed used by exchanges (the "SIP") to disseminate information. HFT's can then respond to market movement more quickly, or use the information to place ultra-fast trades ahead of retail orders in specific securities, and profit off of this information. This is described by Nanex, LLC. at:
http://www.nanex.net/aqck2/4599.html
The unfair use of faster, direct feeds can also lead to manipulated market movements, and exaggerated momentum, all potentially harmful to the individual investor.