Walk Score
Walkscore.com provides a useful site for people trying to figure out where to live in San Francisco. They probably need to include hills in the calculation, because some places are very well located, but people tend to drive if they have to hoof it up a 45 degree hill on the way back.
The system has a heatmap that helps you understand which areas are more walkable than others. This is their top 10 most walkable areas for SF:
1 Chinatown
2 Financial District
3 Downtown
4 North Beach
5 Mission
6 Nob Hill
7 Pacific Heights
8 South Of Market
9 Western Addition
10 Haight-Ashbury
Not sure all these areas would make it on the most livable neighborhood list. It also says the San Francisco is more walkable than New York. I guess living at the top of Potrero Hill, I have a different perspective.
A cool site nonetheless.
