The debate can go on and on, but the bottom line is there are people who understand how to trade extreme volatity..use high leverage like 10-50 standard lots, and can consistently make 10 -20 pips a day..which adds up to several $100,000 a year. And you have tons of guys on forums that try to make 100's of pips a day, trading mini-lots, for years..testing systems.. and quite frankly are never realistically going to make any money at this. Ever. Scalping can work..but you have to be very good at it. It takes hours and hours of screentime, the right software, and an understanding of how price moves during volatile times.