Just an FYI,

I placed an order on Overstock.com through the AA shopping portal. I paid using gift certificates from Gift Certificates.com also through the AA shopping portal. Overstock credits the gift certificates as "coupons" , so it does not appear that I will get the credit for the full $300 ( supposed to be 2 miles per dollar) through Overstock. I will still get the 2 miles per dollar from Giftcertificates.com, plus the AA visa 1 mile per dollar. Not worth complaining about, and work is buying the stuff anyway.

Has anyone had similar experiences with other retailers through the shopping portals using gift certificates?? Which ones work well?