Obviously the second.

San fran is a supremely walkable city.

...except for the hills and, depending on your point of view, lurking vagrants/robbers/poopers. Some of us prefer our walks without the aroma of fresh human feces.

None of that in Portola and the Excelsior. Ingleside, too. I've also found Bernal Heights quite pleasant.

I wouldn't call it "supremely" walkable but yeah it is walkable.

I have a lock so that if I am burgled my insurance will pay out.

Would be interested in this. Are you looking for a new customer?

I would be interested, but the way it's set up is kind of tailored to the way my friends work. It would take some time to make it more generally useful. I think there other platforms out there that do the same thing in a more generic fashion.