[timr]

While I agree that there are better and worse places in the bay area, they mostly self-partition based on the pain of transportation to tech centers. Sure, you can always choose a more painful commute to escape tech, but that's implicit. You can commute from Fresno or Marin, too.

East bay neighborhoods that have "easy" access to SF/Facebook/Google are just as clogged with tech people as anywhere else, modulo the pain of a daily BART commute.

(Also, arguing about exact percentages isn't relevant. It doesn't matter if it's 12% or 30%, if the group overlaps substantially in lifestyle and interests. If I have to change my entire lifestyle to avoid being surrounded by tech bros, I'd rather just move somewhere where I can go out and not be surrounded.)