Google has announced walking directions for its online maps: the directions allow you to go the wrong way down one-way streets and appear for distances less than 10 kilometres. Since it’s Google, it’s in beta; there are some interesting hurdles still to be overcome: “[W]e don’t always know if a street has a sidewalk, or if there’s actually a special pedestrian bridge for crossing a busy street. There are still a lot of pedestrian pathways we don’t know about, and they might save you some time if you find them. We’re working on collecting new data on pedestrian pathways and on more effective ways to solicit your feedback, so that we can steadily improve this feature and get you where you need to be as efficiently as possible.”

Update, 7/23: Well, that didn’t take long (via GMM).