Through 31 March 2012 ("or while promotional funds last"), Discover Card is offering free 1-day shipping on "select items" purchased at Amazon.com. Details are currently available online at http://amazon.com/discfreeship and that page lists the details and provides access to some of the items eligible for this promotion. The Promo Code to use is DSCVRSHP. The instructions to follow for taking advantage of this offer are all listed at the top of the page at http://amazon.com/discfreeship.