AmEx pays $300 million for Steve Case's Revolution

Remember Steve Case? He's the guy that used to send you diskettes in the mail to get you to sign up for America Online so you could dial-up to the Internet. Then, in January 2000, he sold AOL to Time Warner (TWX) -- ultimate parent of DailyFinance -- in a $166 billion deal. On Dec. 9, Case's mutated creation, AOL, will become an independent company again.

But Case has moved on since 2000. And Wednesday, he scored a smaller financial victory when he sold Revolution Money to American Express (AXP) for $300 million, according to the The New York Times. Revolution Money lets users pay for things online using a Personal Identification Number with cards that lack names or account numbers. Compared to American Express, it's a lower cost, more secure way to pay.