Comment Re:Limit order? (Score 3, Informative) 246
Because nothing you said focused on the problems the article discussed.
One of them was the ability for people to see your trade and then cancel their own order, all before your trade was executed. All made possible because the HFTers were located fiber-optic-distance closer to the exchange servers
Limit orders work fine for small investors, but don't work on high trade situations - you end up ensuring that you get the worst possible price. That is, you only get executed after the price has moved in the wrong direction.