Profit from a falling market...
Straight Through Processing (STP) Forex brokers sent their customers orders directly to the liquidity providers (banks or larger brokers) without running them through a dealing desk. This means that orders are filled without unnecessary delays, and that ideally, with execution Straight Through Processing there are no re-quotes.
Straight Through Processing brokers make money by adding a small commission, or markup to the spread. Whether a trader wins or loses, the broker gets the same markup. Therefore there is no conflict of interest between the two parties. This is a definite advantage to market makers – when trading with a market making broker, your losses are the broker’s gains. STP brokers benefit more from winning traders. The trader trade more and the broker thus gets more commission/markup fees.