This is a cool promotional idea by a German dog food company that uses Foursquare and combines checking in with target marketing. People enjoy getting something for free. At a checkin at foursquare for example. And they do it over and over again! They catch the target group while waking the dog, use the typical conditioning-approach, but now for the masters. The Message; Check in! Snack out! Just check in the location of the billboard at Foursquare and the dog food comes out of the dispenser automatically. Check out the video below, think it's a good promo?