As long as they can find folks to Fly4Beer or Fly4Water they should be around for another 5, but if you start to see a management slowly bailing out of the company, specially if that follows a 3 or 4 consecutive quarter losses being reported it will go the way that most start ups do, down the toilet. They were smart enough at least to get the Fly4Free crowd for the RJ portion of the operations, so that should help it go a bit further than it would off.
My crystal ball says 4 quarters in a row of losses followed by some management bailing followed by shrinking of the fleet, followed by JetBlue 4sale, followed by Chapter 7. I give it till 2012.