Efforts such as ISPs [Internet Service Providers] sharing knowledge on how to crack down on spammers, and authorities enforcing CAN-SPAM legislation have helped North America thwart the efforts of spammers on their doorsteps. Some of the most prolific spammers have been forced to either quit the business or relocate overseas as a result.  -   Graham Cluley     Quotes
Efforts such as ISPs [Internet Service Providers] sharing knowledge on how to crack down on spammers, and authorities enforcing CAN-SPAM legislation have helped North America thwart the efforts of spammers on their doorsteps. Some of the most prolific spammers have been forced to either quit the business or relocate overseas as a result. Graham Cluley