Ever seen a gumball machine that takes Foursquare checkins as payment?
“This gumball machine allows people to tell their friends they are at your location. That will appear on Facebook and Foursquare. They purchase a gumball to check in, or announce they are at a location through Foursquare,” explained DeAngelo. “There’s less than a second delay. You are purchasing it through social media currency. The value comes from the impression you can garner from someone checking in.”