First, the good news. It appears that Visa and Samsung's Olympics trial went over so well, that it's expanding those mobile payment dreams to a global audience. Now, the rough news -- Visa has convinced Samsung to pre-load the payWave app onto every future Samsung smartphone with an NFC module. Granted, you'd be using that anyway for contactless payments but only if you had a Visa card. At this point, it's practically a given that the impending Galaxy S IV will boast not only an NFC chip, but pa