Indeed, as people have commented clearly enforcing this measure would be undoubtedly hard; verging on the impossible in many a case.
More importantly, I'd ask where does the money generated from this go? An idealistical suggestion might be to going into funding "anti-spam" open source products, such that people will get a better chance of cutting out the chaff from their email.
Slashdot Mirror
Indeed, as people have commented clearly enforcing this measure would be undoubtedly hard; verging on the impossible in many a case. More importantly, I'd ask where does the money generated from this go? An idealistical suggestion might be to going into funding "anti-spam" open source products, such that people will get a better chance of cutting out the chaff from their email.