DrinkRobot was created by Kyle Powers, Katie Macias, Cole Malmberg, and Xin Guo as a class project in CSCE 378 Human Computer Interaction. DrinkRobot is a free service, and will always be that way. If you want to say thanks, buy me a drink!
Credit for the robot character (Robby Robot) goes to Luca Cattivelli. Check out his other kickass artwork at http://www.coroflot.com/chaosboy_industry.