Quote from short&naked:
Well, take a highly liquid fx pair like EUR/USD that is harder for a single player to move during peak time. This is the kind of pair that would probably more readily respect short term MAs as R&S. However, I think that cross-over systems are more popular over the short term.
Like with any short term trading, you'll get more false signals regardless of what indicator you use.
In fact, you shouldn't be scalping anything but the E/U the spread will kill you with the other pairs. JPY cross should be used for carries only (IMO).
Also, tight spreads make money and risk management so much easier and exact (something not ofter mentioned)!
Not the scalping arguments again!!!!!!!!!
Shit, here comes Cable......

