well some time u can make a lot of money with this strategy but if u dont have big capital and ur taking a big lots then may b it can wash ur ac coz for example if u buy gbp/usd at the rate of 1.5555 and then 1.5678 and then it goes up and up and u dont get time to close them and u just do averging may b it will loss u too much to make profit from trade,trader needs to place trade in the makret,to make profit trader needs to trade with the trend,that is place buy or sell order,but its not easy task for trader,to make profit from trade,trader needs to find out the trend and then only place trade