To satisfy both curiosity and hunger, Yoplait Greek launched an advertising and augmented reality campaign called "Greek4Good" in New York City and Chicago. First, we put Greek messages on wallscapes, billboards, t-shirts and even cups of Yoplait Greek, and then we encouraged people to decode the messages via a mobile app. The cities competed over 'doing good' since each message unlocked earned points for their local food shelves. In the end, the Greater Chicago Food Depository received a nice $25,000 donation, courtesy of Yoplait Greek and our new tech-savvy fans. The best way to learn about the campaign is to experience it for yourself. Visit greek4good.com to get the app, and decode the messages in the gallery.