The American Express free $100 gift card giveaway program was just renewed for a short time with an extremely limited number of new gift cards just in from BP.
You can register online, then book and stay at a qualified vacation property and get a $100 gift card for each night you book, up to $300 in AmEx gift cards. The stay must be between 9/21 and 10/15.
The new cards just become available today and they are going really fast. The Perdido Key Chamber has posted details on their Web site at www.VisitPerdido.com.