Book a flight to or from New York JFK between Oct 11 and 31 and travel through Dec. 15 2007 and you'll receive triple points in JetBlue's frequent flyer program. You must register for this promotion.
In case you're not familiar with JetBlue's TrueBlue points program, you need 100 points to get a free flight. And for a limited time, you can get 50 of those points by
signing up for a JetBlue American Express Card.