Started in Chicago, Illinois, Groupon has expanded to dozens of cities all around the world and has become an Internet sensation. Mason's billion-dollar idea has revolutionized e-commerce. Groupon has taken the good and the bad in stride, using setbacks, challenges, and competition to learn valuable lessons and improve its strategies for continued growth and worldwide expansion. It has revolutionized the ways in which we interact with our local economy, including our neighborhood businesses and merchants. This is the remarkable story of Andrew Mason and his billion dollar idea that is saving consumers around the world billions of their own dollars while providing a boost to recession-challenged local businesses. This volume includes Fact Sheets on Mason and Groupon, as well as an informative timeline.