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Last year, San Francisco became America's most wireless-saturated city, with 801 public hotspots. Nearly every cafe in the city turned into a wireless workplace (Ritual Roasters, for example).

So in the interest of service journalism, here's a tip to all entrepreneurs: Buy an office building and hire out cubicle space to workers trying to relax.

S.F. offers more wireless access than any U.S. city [SF Gate]