] The new law hasn't had an effect on the amount of spam
] being sent, either. "There's been no reduction in the
] volume of spam," says Scott Chasin, MX Logic's chief
] technology officer. "In fact, the exact opposite--our
] spam rates are actually going up."
]
] MX Logic classified 77 percent of its customers' e-mail
] as spam on Monday, up 6.5 percent from January 1.

SPAM continues to grow exponentially. At these rates I think there is about a year left before people will start exiting SMTP in favor of closed systems.

PCWorld.com - Is the CAN-SPAM Law Working?