Jet Blue's All You Can Jet Pass

Jet Blue is having this fly-all-you-can promo for a month in the States for $599 excluding taxes for international flights. I am not sure as how they compute profits in the airline industry because frankly, those zero fare flights of Cebu Pacific still confuse me. But do you think this would work if other airlines in our region follow this? I wonder.

From their website:
Choose from 57 cities and more than 600 daily flights!
Enjoy unlimited travel with our All-You-Can-Jet Pass! For just $599* you can take JetBlue anywhere you like, as often as you like, from September 8 to October 8, 2009. Use your All-You-Can-Jet Pass for business, for pleasure, to visit your favorite cities or to meet with a client. You might as well just do it all! With more than 50 cities to choose from, and for just $599, it's a deal you can't pass up.

About the Pass
* $599 for a month of unlimited travel, any available seat
o Domestic taxes and fees included
o International and Puerto Rico taxes and fees not included
* On sale through Friday, August 21, 2009, or while supplies last
* Travel Dates: Tuesday, September 8, 2009 through Thursday, October 8, 2009
* Each flight must be booked no later than 11:59 p.m. MDT three days prior to the flight's scheduled departure.
* Nonrefundable/nontransferable/no name changes permitted
* Customers who already have a flight booked during the pass travel period can pay the difference to upgrade to the pass by calling 1-800-JETBLUE (538-2583), prompt 4.
* Each All-You-Can-Jet Pass is eligible for 35 TrueBlue points. Flights booked on the pass are not available for additional TrueBlue points.

For complete information, click here.