Of course, the really cool thing is seeing how walkable other cities and neighbourhoods are - you know, the ones you can't access by stepping outside your door. Unsurprisingly, San Francisco and New York City and Boston are the most walkable cities in the USA.
They don't have rankings of the most walkable cities in Canada, but you can search for addresses to get a score. Toronto didn't fare too badly, but it depends on where you live, really.
What does this all mean? They explain:
Picture a walkable neighborhood. You lose weight each time you walk to the grocery store. You stumble home from last call without waiting for a cab. You spend less money on your car—or you don't own a car. When you shop, you support your local economy. You talk to your neighbors.(Screenshot found here)
Walk Score admits there are many features currently overlooked by the software - like weather, design, safety, or topography, but it is still a pretty cool tool. Via Grist.