Late 2009, I was taking a class called “Business of Media,” taught by Professor Aaron Cohen, and it was the first time I heard about Foursquare . Aaron invited Dennis Crowley, one of the founders of Foursqaure, as a guest speaker for a lecture.  At that time, I did not really pay attention on this application, and I guess

it was because I did not have a smart phone or I was too much focusing on other popular SNS like Twitter or Facebook.

Recently, I read some interesting articles about Foursquare that it has grown more than 3400% in last year.

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