Great and not great things about San Francisco (till I run out of things to say)

Great: no shoes, a few laptops out

There's a kind of social gathering I'm sure isn't exclusive to San Francisco but I've never experienced anywhere else. Everybody takes their shoes off at the door, people are milling about, and a few people have laptops out & will happily chat with you if you peek over their shoulder.

It's a very good sign in SF to show up somewhere and see something like this outside the door.