No Subscription for Spam Relief (excerpt)
Joanna Glasner, Wired News, April 5 2002
...In many cases, replies to spam end up going nowhere because the address from which the message was sent has already been shut down, said Dan Birchall, executive director of SpamCon Foundation.
"The odds are very good that at the beginning of their spam run, it'll get reported by someone who doesn't like spam," Birchall said.
He added it typically takes few complaints for an ISP to suspend or cancel an e-mail account.