In case it hasn't been said, there is a trick to the footprint thing that one of my co-workers found. Tap on the nearby Pokemon button and then tap on the Pokemon you want to find. After you've done that, slowly rotate your device 360 degrees until the little box with the Pokemon and footprints pulsates green. Once it does that, you are now facing the direction where the Pokemon is. The closer you get to the Pokemon, the faster it pulsates and of course the number of steps will shrink.