San Francisco, the area, is one of the most interesting of u.s. food environs. I like the place, and I like food, so I follow it, though it's not the only place I follow. I love several cities, but San Francisco was early. I went there at nineteen with some girlfriends, bringing my most sophisticated clothes (say, a black skirt, some high heels, and soon had very sore feet. Luckily I also brought flats.) That's a long time ago.
Stuff is going on in the city, as pricing for housing has been wildly ramping up with the tech folk showing up there and a lot of people are being displaced. Much chihuahua on all that, re tech company buses, and not all techies horrible, but real unavailability going on for renting reasonably. Meantime, some of the hot restaurants in a key hot restaurant city can't keep really good cooks, since the really good cooks can't find a reasonable place to live near work. (I have a link for that, will have to find it). Ok, here:
I just ran across an article about some of the restaurants in the area closing in 2013.
I'd have liked to go to most of them.
Slide show here:
This is interesting re economics and may affect other cities - and interesting re what is the use of striving to be excellent..