I know a guy who knows a guy that has been around a couple of different platforms. Gain, FcStone and FXDD I believe was the order of things. He let us know that they do for sure trade against you. I have worked a large account with FXDD and had a wild time because of constant price changes and even not being able to close the trade. I do believe that's why he left the other platforms and went to a company that specializes in stocks but that have now a forex division. I have spoken to his co-worker and my brother has spoken to him directly. So basically, from the horse's mouth you can say. With 95% I guess of people who lose all in the forex, taking trades against them seems like a winning system. 
