ReTel Technologies
Adam Rodnitzky, Scott Roberts, and George Aspland

Adam Rodnitzky spent four years in advertising before launching ReTel Technologies with two other former students, Scott Roberts and George Aspland, of the University of Chicago's Graduate School of Business. The trio came up with a new way to reach consumers—a postcard-size gadget that hooks onto grocery shopping carts and flashes coupons as folks move up and down the aisles. If customers see a coupon they want, they press the touchscreen. Then, at checkout, the coupon's savings is subtracted from their bill. General Mills and Beech-Nut have agreed to pay ReTel to feature their coupons in tests in September. Rodnitzky, 33, who just received his MBA, hopes the in-store experiment will encourage others to sign on.

—Maggie Gilmour (posted on July 7, 2008)