Google Maps

I searched computer hardware stores in my home town area and found Google Map and Driving Direction quite impressive. I also spent a little time checking out Yahoo Map and MapQuest. Compared to the other two offerings, Google Map provides the largest map viewing area and keeps the rest of page very clean as opposed to getting cluttered with ads. Google Map also interacts very well with the users by showing neat popups when the turn of driving direction is clicked. Panning around the map is very smooth by dragging it with the mouse. At the right bottom corner, it states that the data is from NAVTEQ, which is also used by the other two map offerings. So everyone uses the same source, it is just a matter of coming up with the best user interface and Google does it brilliantly.