Unfortunately for the folks in BGI not only is the flight cancelled again today, but it has already been cancelled for tomorrow as well. Nevertheless, in the defense of JetBlue, as no-one else has ever seen JetBlue put on extra sections after weather related cancellations, I can admit that on multiple occasions I have seen JetBlue add extra sections. In fact, in my opinion, and through my many years of travel experience, I would rate JetBlue, Delta and Air Canada as the top three airlines for adding extra sections or substituting a larger aircraft, as I've seen Air Canada do on multiple occasions.
At the end of the day, in my honest opinion many people on here are really being unrealistic in their expectation that JetBlue should add additional sections now, while weather and airport operations are not normal.