That doesn't work when the archer is a hiding prick, that only shows himself once you're getting ganked.
He won´t make kills that way, especially archers, compared to xbows, can´t hide away all the time. A good thing is to repeatedly make sure where the enemy ranged on the map is. "Out of the eye, out of the mind" is one of the biggest strength of a ranged, you won´t believe how fast people drop their guard when you only hide behind something for 2-3 seconds.
Also, shooting into a gank is bad ranged practice, it´s way too easy to hit or even kill one of your own guys. Some ranged still do it, but they´re barely topping the scoreboard. They´re too greedy.
