How walkable is your neighborhood? At least according to an over-simplified but fun model?
This site lets you enter a city, neighborhood or zip code and it will tell you how "walkable" it is (which also includes biking and public transit). It seems to be pretty good at telling us things we already know: if you live in central Portland, you have more transit options than if you live in Salem. But also there are certain times when I think it might be overly specific: mostly no way is Seattle more walkable than Portland!