We already covered the basics of collectible digital stamps. Earn Fantastic Chances to Win Cash DigiPhi's digital collectible stamps are new and, we think, pretty neat. If you're a philatelist. What makes them even neater? Cash, the cold hard type. You can buy a stamp or a sheet of them just to collect and trade as, we expect, many will. But we added a sweepstakes to them to help spread the fun. How's it work? Pretty easy. Like a Free Lottery - Just Better DigiPhi stamps are made of code th...