It gets a little hot, and it's about 3 hours from Silicon Valley.
If you just want to live in a cool place that's startup-friendly, Portland rocks. It's also much less expensive.
http://en.wikipedia.org/wiki/Silicon_Forest
Open Source Development Labs/The Linux Foundation is here, too, and so is Linus.
There's free wireless all over the place, and Portland was the "Most Unwired City in America" in 2003.
Oh yeah, and there's no sales tax. A lot of people move just over the border to Vancouver, Washington (which has no state income tax) and shop in Portland.
Sacramento is far enough away to make you think twice about attending all the cool events that happen in San Francisco and Palo Alto and Mountain View.
Anyone have suggestions of safe areas that aren't overly expensive or too far away?
http://sfbay.craigslist.org/sby/roo/401753275.html
for example (800/mo for a 2bd/1ba). But there's no 'atmosphere' compared to Palo Alto, or Berkeley.
What everyone does is share a place. Usually you will pay $750-$1000 per room, depending on location.
Commuting a long way to save on rent doesn't make sense. Gas is expensive, car maintenance is expensive, parking is expensive, time is expensive.