I saw this featured on the news and thought it would be very appropriate to share here.
We often get questions about whether point A to point B is walkable. Now distance is fairly easy to figure out with something like Google maps, but often it's a tad difficult to understand the topography options on maps.
So some guy decided to do the work for you. Using Hillmapper, you just place the little person avatar wherever it is you'll be starting - say Fisherman's Wharf - and streets is all directions will either remain neutral (like say along the Embarcadero) - they show red, for uphill - or blue for downhill. The intensity of the color shows how difficult the climb will be.
As you move the avatar along the route, you'll see the colors change to reflect the terrain from that new spot.
And if you pay close attention, sometimes you'll notice that if you move over a block or two, the grade is easier, if longer.