Definitely a proof of concept, and not the shortest walk to the solution. But, haven't we all been thinking 4SQ / social media is all about friends, tweets, co

Definitely a proof of concept, and not the shortest walk to the solution. But, haven't we all been thinking 4SQ / social media is all about friends, tweets, coupons and mayorships... this proof of concept shows 4SQ could one day solve business problems, like presence too. I think that's just neato!