It should be noted that the Nasdaq is not the only US exchange, and while I do think that it is the most likely route if they do go for a listing there are two other possibilities, the OTC is of course not an exchange. 

One is the NYSE, but that is out of reach in my opinion....and I would wager a large amount that a listing to the New York exchange is out of the question.  But besides the Nasdaq there is also the Amex exchange. I'm not a big fan of the Amex, although I did take a flyer recently on an AMEX listed stock.