American Express is kicking off a nationwide promotion this Saturday offering 'Delta SkyMiles Credit Card' holders double miles for every purchase made on the 'SkyMiles' card through June 15th. To be eligible for the double miles, cardholders must make at least four purchases on the card from May 15th through June 15th. The annual fee is $55 for the classic 'Delta SkyMiles Credit Card'; $85 for the 'Gold Delta SkyMiles Credit Card' (unless the cardholder has an AmEx Personal, Gold or Platinum Card in his/her name, in which case there is no fee for Classic and a $30 fee for Gold.) For more information, visit the American Express web site at www.americanexpress.com or call 1-800-SKY-MILE.