Happy Foursquare Day!
In 2010, Foursquare fans declared April 16 4sqDay (4/4^2 – nerds after our own heart!). Two years and two billion check-ins later, Foursquare is still going strong with over 20 million fans and over three million check-ins every day.
Check-in today to claim your own unique 4sqDay badge from the social network!
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