CNN: (Bill) Gates: Buy stamps to send e-mail [View All]

http://www.cnn.com/2004/TECH/internet/03/05/spam.charge.ap/index.html

If the U.S. Postal Service delivered mail for free, our mailboxes would surely runneth over with more credit-card offers, sweepstakes entries, and supermarket fliers. That's why we get so much junk e-mail: It's essentially free to send. So Microsoft Corp. chairman Bill Gates, among others, is now suggesting that we start buying "stamps" for e-mail.

Many Internet analysts worry, though, that turning e-mail into an economic commodity would undermine its value in democratizing communication. But let's start with the math: At perhaps a penny or less per item, e-mail postage wouldn't significantly dent the pocketbooks of people who send only a few messages a day. Not so for spammers who mail millions at a time.

Though postage proposals have been in limited discussion for years -- a team at Microsoft Research has been at it since 2001 -- Gates gave the idea a lift in January at the World Economic Forum in Davos, Switzerland. Details came last week as part of Microsoft's anti-spam strategy. Instead of paying a penny, the sender would "buy" postage by devoting maybe 10 seconds of computing time to solving a math puzzle. The exercise would merely serve as proof of the sender's good faith.

Time is money, and spammers would presumably have to buy many more machines to solve enough puzzles. The open-source software Hashcash, available since about 1997, takes a similar approach and has been incorporated into other spam-fighting tools including Camram and Spam Assassin.

Uh Bill, my snail mail box does run over with credit-card offers, sweepstakes entries, and supermarket fliers. Guess you're trying to make the old email hoax I get a couple of times a year that email postage will be charged true.