no, the spreads on the interbank market have not changed because of the scalpers. they've increased because of credit crunch and in retail brokerages... there are many reasons and this system is one of them. I was on the phone with the guy from FXPRO and I've asked about scalping. He told me that if people keep doing it, they'll just increase the spreads. They're simply loosing because of systems like these under current market conditions. So retails have to increase the spreads, institutional brokers... they don't really care about the system... they have different problems now...