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Some antispam services try to use text or numerals embedded in graphic images to discern whether the sender is a human, while others rely on "whitelists" of approved correspondents, pattern-matching to flag suspect messages, or verification procedures. The process can be problematic: On Tuesday, a coalition began compiling reports of legitimate e-mail accidentally snared by spam traps. At least in its current form, CashRamSpam is more of a "proof of concept" than it is a robust antispam solution. Anyone who wishes to contact a CashRamSpam customer must purchase an account themselves first, there is no provision to permit friends or colleagues, and the system does not permit legitimate mailing lists to which users voluntarily subscribe to bypass the payment process. CashRamSpam keeps 10 percent of a user's contact fee as its payment.



When someone tries to contact a CashRamSpam customer, a message is automatically returned saying: "We regret your message cannot be delivered using ordinary e-mail because the receiver has a CashRamSpam account...If you want to succeed in reaching this receiver please register at www.cashramspam.com and resend the message from there."

Brad Templeton, who wrote an influential essay around 1995 about charging for e-mail, says those shortcomings could doom the concept.

Templeton, who is also chairman of the Electronic Frontier Foundation, says he no longer supports the idea of charging for e-mail. "I think it's a bad idea in principle," Templeton said. "We're putting an artificial cost on communication, free expression. It would have a chilling effect on speech if it were widespread. It shouldn't cost you money to talk to someone for no other reason than to cost your money. You have a right to demand that people pay your money for your attention, but it's overall not a good idea."

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