Get a $10 Costco Cash Card when you pay your wireless bill automatically with any American Express card

Through 3/31/12, get a $10 Costco Cash Card when you sign up to pay your wireless bill automatically with any American Express card.  First, enroll your American Express card here. AT&T, T-Mobile, Verizon Wireless, Sprint and Alaska Digitel plans are all eligible for this offer. Then, sign up to pay your mobile bill with the same American Express card that you enrolled (do this through your wireless provider). You'll receive your $10 Costco Cash Card 8-10 weeks after your first wireless payment with your enrolled American Express Card.

HT:  MyMoneyBlog