There was a posting on the Boston Globe blog about the Portsmouth to Newburgh routing. But they're going to market it as Boston to New York which seems a little disingenuous. If you were were actually looking to get from Boston proper to downtown New York it seems like you'd be better off just getting on a Greyhound bus which would take just as much time as getting out to PMH, flying to SWF and then finding transportation into Manhattan.

If you're going from surroundings to surroundings that's a different story but I'm sure they're not going to make that distinction in their ads.