There is no accurate measurable volume in forex. We can assume there is more volume with increased volitility, i.e. tick movements. Thats another reason I think this simple indicator could be very useful. It automatically gives less importance to the movements during the lulls and gives importance during volitile periods. This way our signals are biased towards actual movements. Meaning the lulls may signal down movement, but upward ticks during active periods can quickly correct the signal to show the true strength of the bulls. I see that as yet another strength of following ticks in a simple oscillator.