You will find small dogs running around her Get Satisfaction office in Potrero Hill, neutralizing the energy of the fast-paced company.

FORBES: More Women In Tech, More Women Mentors

We found pockets of LTE in Potrero Hill and SoMa, and nothing but CDMA in the Mission District -- that's two out of the three neighborhoods we checked.

ENGADGET: PSA: Sprint LTE is now live in San Francisco Mobile

Some grew out of other operations: Rogue, from Oregon, makes gin, rum and whiskey, but is better known for its line of craft beers, just as Anchor, a San Francisco brewery, began making a first-rate Junipero gin and Old Potrero rye only after a century of brewing beer.

ECONOMIST: American beer and spirits