I'm not sure if this was the post I was thinking of that mentioned this website or another, but I like WalkThere. I found
WalkScore today, another site on the same topic. I like the concept of it and how thorough it is, as well as all the articles/features they include.
However, when I typed in my own address, it was remarkably accurate. But when I typed in a few sample intersections, it needed exact information (e.g. King St W and James St S, not King and James). I also found a couple categories (grocery stores, clothing) were a little nonspecific.