I only look for the stickers when I get *real* close.

Maintaining a constant scan of the surrounding traffic and shoulders, and making sure I keep my distance from other cars, makes me a better, safer driver than if I were blithely oblivious to my surroundings and concentrating merely on whether I'm under the speed limit. By tracking each and every one of the other cars on the road, and observing their movement and behavior, I'm in a better position to react safely to unexpected situations. High situational awareness makes one safer, not less safe.

Note that I never "blow by" other cars when I'm exceeding the speed limit. I always slow down when I'm among other cars, and only pass them carefully at a slight speed difference. The only time I'm really going fast is on an open stretch of road with no other nearby cars.