Boy, I could have used HopStop last week when navigating New York City! HopStop is an on-line, city-transit guide in four major cities and they now offer a mobile-friendly version of the same. New York, Boston, Washington, D.C. and San Francisco residents can take advantage of the site and find directions for walking, subway, bus or better yet: any combo of the three! For folks with a GPS integrated in your car: that GPS works great when you’re IN your vehicle, but you might consider checking out the free HopStop service when out and about! If you want to preview the mobile-friendly screen on your PC, just hit this link.