Originally Posted by
tonyflyer
Which American Express® Cards are eligible for this program?
You may enroll any valid U.S. American Express Consumer Card or Business Card from American Express OPEN. Corporate Cards and Prepaid Cards (such as American Express® Gift Cards and Serve® Cards) are not eligible. If your Card cannot be validated, please call the customer service number on the back of your Card for assistance. See our Program Terms & Conditions for full eligibility rules.
https://sync.americanexpress.com/facebook/FAQ
No dice but good find!