For those on the bleeding edge of technology there are seemingly hundreds of new applications and networks, each with slightly different functionality, each competing for the icon space on my phone (Blackberry). One that has been getting a little bit more share of voice is a location based application/game called FourSquare. Location has always been important to relationships – the ‘L’ in ASL still begins thousands of online chat encounters daily, but over the years, those who have tried to launch location based services have come up against the same barriers. Those barriers are rooted in basic economics, which most application developers have never studied, so they don’t have any concept of utility or critical mass or switching costs. A service like FourSquare is actually very simple to build. You don’t need GPS or an iPhone, all you need is

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