I would guess that placing labels on a map has some cost. Not doing this(especially over 3G, 4G, EDGE) might have some gain in loading time. If you need that f

I would guess that placing labels on a map has some cost. Not doing this(especially over 3G, 4G, EDGE) might have some gain in loading time. If you need that fine-grain detail zoom in? Not saying I advocate this approach, but thought I would try give you an answer :)