Quote from FXTraderWill:
Also, on top of that, you're acting as though black boxes are machines at war with human traders; they're just algorithms written by traders - some are good, some aren't. There are black boxes which compete with me in certain setups I take, and will beat me in getting orders filled; however, there are also a lot of really dumb boxes. There are so many add-liquidity boxes which have no concept of when it's a good idea to add liquidity and when not to which frequently are there to get me out of stock at a much more favorable price than any human ever would. Those add liquidity box programmers need to learn about the concept of intraday mean-reversion.
A lot of boxes are turned on every day, and a lot are turned off. Just as the good ones take away some money from us scalpers, the bad ones give money back. And in my professional opinion, there are more bad boxes than good boxes out there. [/B]