Foursquare Hits 20 Million Users

As the three-year-old startup celebrates 4sqDay (April 16th, which is quite literally "four squared"), Foursquare reports that a solid 20 million users are 'checking in' to what they're putting down. 

Though the whole location-based check-in software wave is nowhere near mainstream (a December 2011 Forrester Research study noted that only 5% of adults are using these apps), it seems Foursquare has capitalized on what can only be referred to as a captive audience with an obvious addiction to the overshare. 

Mashable reports that "Foursquare users have, however, checked in 2 billion times in the last two years, according to the 4sqDay badge message. On average, that’s 100 times each — suggesting that while checking in may be the least prevalent smartphone activity, those who do use Foursquare do so frequently."

Whether it's the simplified integration with Facebook and Twitter, the deals and steals associated with becoming the "mayor" of a location or simply the act of sharing one's whereabouts with friends, users are certainly gravitating towards the slow growing social media trend that seems to be all the rage for those of us with a jam-packed social calendar.

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