Another thing I found interesting about that article is that Mapquest, Google, and Yahoo are all running off data from the same company, Navteq. You've gotta fi

Another thing I found interesting about that article is that Mapquest, Google, and Yahoo are all running off data from the same company, Navteq. You've gotta figure that many of the nav systems in cars probably run off their data as well. The implication here is that if all these services have the same map data, the accuracy of directions is determined by the algorithm used in each of these systems, so Mapquest apparently has the best one.