Quote from hajimow:
One of the reasons that I am with IB is the liquidation rule. I have be liquidated a lot with loss but it has saved my ass. My advice is that don't go with a broker that does not liquidate and when you are really broke, you get a nasty letter from your broker asking you to deposit money which you don't have.
If part of your trading strategy includes automatic liquidations of your positions by the brokers automatic risk management process you need to revisit your strategy.