Register and receive triple points when you book and fly by 12/31!
From JetBlue: "TrueBlue members who register can earn triple TrueBlue points—that's 12 points per dollar spent when you book on jetblue.com!—by booking and flying by December 31, 2012. Plus, there's no limit to the number of times you can earn triple points during this period.
You must register for triple points before booking your flight."