ATLANTA – In a co-marketing first, Discover Financial Services and The Mills Corporation have held the grand opening of the Discover Mills shopping center. The 1.3 million square-foot retail and entertainment center located in Gwinnett County is part of a 10-year partnership in which Discover Card is the preferred payment method and will be linked to marketing programs including special offers, in-mall promotions and Cashback Bonus award promotions with selected merchants. In addition, Discover will have its own storefront within the mall, which features approximately 200 retailers. More than 70,000 consumers attended the grand opening spending an estimated $4 million.