San Francisco! Coffee! Redundancy!

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via You Are Here,  the location of every coffee shop in San Francisco, and its Walkingshed
Independent coffee shops are positive markers of a living community. They function as social spaces, urban offices, and places to see the world go by. Communities are often formed by having spaces in which people can have casual interactions, and local and walkable coffee shops create those conditions, not only in the coffee shop themselves, but on the sidewalks around them. We use maps to know where these coffee shop communities exist and where, by placing new coffee shops, we can help form them.
Visualizations - use the power for good, never for evil :-)

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