Why is it a bit of conventional wisdom that Lieberman is going nowhere and has no plausible scenario by which he can win? It seems that the internet crowd has its head in the sand a little bit if it thinks that the popularity of a candidate's website is in any way related to his real world potential.
Joe Lieberman currently holds the lead in more states than any other candidate except Howard Dean, and this includes Feb 3 states Delaware and Oklahoma. He is in second place in most major national polls and his profile will rise every time Howard Dean mentions Al Gore.
A decent third place showing by Lieberman in New Hampshire would not be a surprise, especially if Kerry continues his slide, and second is not out of the realm of possibility either. The February 3 primaries could deliver him wins in Delaware, Oklahoma, North Dakota, New Mexico and Arizona, with the first three the most likely. If the rest of the field remains splintered at this point, there is no reason to think that Lieberman could not be in the thick of it.
Is it likely? No. Is it possible? Yes.