Update: Here is the current promotion from JetBlue Airways.
Jet Blue Airways is back with a great promotion worth $50 of savings for Fall Travel. It is one of the coolest deals from Jet Blue which is an airways that seldom offers discounts.
Book your flight online by Nov 17, 2007 - Promotion Site & Online Deal
Pay for it using an Amex card
Discount: You will get $25 savings on the flight