Jet Blue has changed their baggage policy.
http://www.jetblue.com/travel/baggage/
Jet Blue is still usually one of the best deals out there. Also, I am sure any veteran knows this, but for the rookies, Jet Blue and Southwest do not always show up on travel aggregator sites like Travelocity and Orbitz. I have started to see Jet Blue pop up, but you have to go to their sites to find their fares most of the time.