This document discusses how businesses can use the location-based gaming app Foursquare to promote their business for free. By encouraging customers to check-in at their location on Foursquare, businesses can have customers become "mayor" of their location, which brings bragging rights, competition and more people talking about the business on social media. This increased activity on Foursquare provides various SEO and marketing benefits like increased visibility on Google Maps and citations that help the business's website rank higher in search results. The document recommends businesses get started with promotions on Foursquare to take advantage of these free marketing opportunities.