I have been following several for about a year….Buttermilk truck, Kogi BBQ, Grill em All, Austin Daily Press, Lomo Iragato, Grilled Cheese Truck, and several more.  Not only do they post their locations and schedule, they use the space to hype up the events that are scheduled, create a buzz etc.  “Followers” also are eager to post comments about their food, post their own photos of visiting the truck.  AND you can see some great photos of the food, the customers enjoying themselves, and their menu.  Pretty slick……The beauty of social networking !