Is Foursquare a Great Place to Advertise?

Recently, the free service rolled out a variety of services for businesses, including the ability to run specials designed to attract and retain customers. Launched in 2009 , Foursquare now boasts some 10 million users eager to let their friends know when they have “checked in” to a hip new store or favorite restaurant.

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Is Foursquare a Great Place to Advertise?