Well, not having a Frequent Flyer program is one of the main reasons you can fly jetBlue "first class" for discount-carrier prices. None the less, according to a report in the Miami Hearld, jetBlue has plans to launch a FFP within a year or so.
yes, the FFP is in the works, or so I've heard. It is rumored to be a ten round trips=one free round trip, so if you've flown with them alot, you should be in good shape. Other than that I don't know any more of it.