To commemorate 4sqDay, Foursquare has announced some new milestones and a new badge.
The social networking check in service hit 20 million users, up from 15 million users 16 months ago. In addition, Foursquare users have checked in 2 billion times, which averages at about 100 check-ins per user.
“In 2010, foursquare fans declared April 16 4sqDay (4/4^2 – nerds after our own heart!). Two years and two billion check-ins later, you’re still why we get out of bed each day. Thanks to all 20 million of you for making us part of your lives. Happy 4sqDay!” according to the 4sqDay badge, which users can get if they use the service to check-in today.
The company launched in 2009 and has outlived two major competitors: Gowalla and Facebook Places.
According to a December 2011 study, a mere 2 percent of the adult population uses location-based check-in services. Nonetheless, the 2 billion check-ins belies any assumptions that location-based services are a fad. It shows that the small percentage of users who do check-in actually do so a lot.
The company has some work to do before it goes mainstream. But that work came come with great reward, since the market for smartphone users is larger than ever.