It's only been half a year since the peculiar PadFone made its much-delayed entry into select markets, and earlier this week, ASUS' launch of its second-gen phone-in-tablet brings us back to this old question: are we better off with just one mobile screen instead of two? Ask any ordinary manufacturer and the answer is likely the latter, because who doesn't want to sell more products? Similarly, carriers would likely back such manufacturers for the sake of selling more data plans, even if they admire ASUS' efforts (and they could already be selling ASUS tablets in the first place). Some folks also argue that if you have
