With NFC payment systems just starting to roll out in the US, it'll be awhile yet before you can cut up those credit cards for good. But in the present, at least, you can use your handset to make sure you don't get stuck with a $100 bar tab again. Discover just announced that it will let its cardholders send money to people in 60 countries -- so long as they have either a cell phone number or email address. As AllThingsD notes, Visa and American Express have hatched similar plans, though Discover is the first of the bunch to partner with PayPal. While people sending money don't need PayPal
