(video: 7-Eleven marketing genius, turning the convenient store into a Kwik-E-Mart) Save 50% off Dinner of the Month Club Purchase. Use the code DISCOVER. Valid 10/7/08 through 10/12/08. 7-11 recently launched a marketing campaign involving the nation’s presidential election. Customers vote by choosing the color of their 20-ounce hot-beverage cup. This gives voters who can’t [...]