Above is an overlay of every (CrunchBase listed) startup in San Francisco.  In an afternoon hack, me, @alan and @thetylerhayes scrapped the crunchbase API then mashed it into Google Maps to get an interesting view of the city.  I am always amazed at the amount of startup culture in this city (hence I moved here), but never had a chance to really see it from this perspective.  My office and apartment are somewhere buried underneath one of those pins.  I’ll try to put up a more interactive version of this chart sooner than later.