The American Express Rewards are rewards that came out of the strategic relationship between American Express and Zynga announced on November 30, 2010. This will allow customers to use Membership Rewards Points from the American Express's Membership Rewards Program, to pay for limited edition virtual goods, as well as physical and virtual game cards for Zynga's games. www.membershiprewards.com/search/?Display=detail&Ntt=Zynga