Just got this by email:

*Now through May 19th, 2003, 11:59 p.m. EST, enter Promo Code THANKSALOT and you'll get 20% off your order at macys.com. Offer is good online at macys.com only and does not apply to Cosmetics, Fragrances, shipping charges, orders placed on MacysWeddingChannel.com, all Gift Cards or prior purchases.