Quote from garchbrooks:
I believe the guy who says you have to remove, but at the same time, unless the edge prices in a slippage of 5-15 cents or so, I fail to see how retail traders can avoid getting victimized in the short run. HFT participants force the retail guy to withstand more risk, but I don't think the reward necessarily goes up. So, if you were doing like some kind of mean-variance study, the profile would look a lot worse for retail than HFT. Yet, it feels like ET has the same number of successful retail trader posters as it did in 2004, and it's a mystery to me how they are surviving.
Oh, with one exception: trading the news with the herd. But this is still most of the game of the manual trader, more so than the automated trader -- the vast majority of retail tools don't allow widespread portfolio-level testing in such a way that you could backtest a strategy that trades news-based signals across lots of different stocks (or maybe even futures.) So I don't think this class of strategy is as effectively used by automated retail traders, although feel free to correct me if I'm wrong.