Location based services such as Foursquare, Gowalla, and Facebook Places have started creating a lot of buzz about a concept called “location based marketing.” What is location based marketing? Just another social media buzz word or something that has the potential to change the way businesses interact with their consumers? Here is a definition from one of the leading mobile marketing gurus: Location Based Marketing: A social media marketing strategy focusing on mobile check-in services, like Foursquare or Gowalla, to bring deals, promotions, coupons, discounts, or specials to customers in real time on their mobile devices. At its core this strategy stands at the intersection of social media marketing and…