Your post advocates a
( ) technical ( ) legislative (x) market-based ( ) vigilante
approach to fighting spam. Your idea will not work. Here is why it won't work.
( ) Spammers can easily use it to harvest email addresses ( ) Mailing lists and other legitimate email uses would be affected (x) No one will be able to find the guy or collect the money ( ) It is defenseless against brute force attacks ( ) It will stop spam for two weeks and then we'll be stuck with it (x) Users of email will not put up with it ( ) Microsoft will not put up with it ( ) The police will not put up with it ( ) Requires too much cooperation from spammers (x) Requires immediate total cooperation from everybody at once (x) Many email users cannot afford to lose business or alienate potential employers ( ) Spammers don't care about invalid addresses in their lists ( ) Anyone could anonymously destroy anyone else's career or business
Specifically, your plan fails to account for
( ) Laws expressly prohibiting it (x) Lack of centrally controlling authority for email ( ) Open relays in foreign countries ( ) Ease of searching tiny alphanumeric address space of all email addresses ( ) Asshats ( ) Jurisdictional problems (x) Unpopularity of weird new taxes (x) Public reluctance to accept weird new forms of money ( ) Huge existing software investment in SMTP ( ) Susceptibility of protocols other than SMTP to attack ( ) Willingness of users to install OS patches received by email ( ) Armies of worm riddled broadband-connected Windows boxes ( ) Eternal arms race involved in all filtering approaches ( ) Extreme profitability of spam ( ) Joe jobs and/or identity theft ( ) Technically illiterate politicians ( ) Extreme stupidity on the part of people who do business with spammers ( ) Dishonesty on the part of spammers themselves ( ) Bandwidth costs that are unaffected by client filtering ( ) Outlook
and the following philosophical objections may also apply:
(x) Ideas similar to yours are easy to come up with, yet none have ever been shown practical ( ) Any scheme based on opt-out is unacceptable ( ) SMTP headers should not be the subject of legislation ( ) Blacklists suck ( ) Whitelists suck ( ) We should be able to talk about Viagra without being censored ( ) Countermeasures should not involve wire fraud or credit card fraud ( ) Countermeasures should not involve sabotage of public networks ( ) Countermeasures must work if phased in gradually (x) Sending email should be free (x) Why should we have to trust you and your servers? ( ) Incompatiblity with open source or open source licenses ( ) Feel-good measures do nothing to solve the problem ( ) Temporary/one-time email addresses are cumbersome ( ) I don't want the government reading my email ( ) Killing them that way is not slow and painful enough
Furthermore, this is what I think about you:
(x) Sorry dude, but I don't think it would work. ( ) This is a stupid idea, and you're a stupid person for suggesting it. ( ) Nice try, assh0le! I'm going to find out where you live and burn your house down!