“As the proportion of spam in my Inbox climbed from 1 percent to 5 percent, 10 percent, and 20 percent, it became clear that soon the spam would outnumber the legitimate mail.”

“I was disappointed to find that the supposedly informative website turned out to be a spamblog filled with irrelevant advertisements and no original content.”

“A Reverse Non-Delivery Report attack occurs when the spammer takes advantage of a server's inherent ability to return email that is misaddressed.”

“If a would-be spammer had to perform one second of computation for each person he spammed, the pace of spam would slow to glacial.”

“Of course, what happens when a perfectly legitimate emailer is labeled as a spammer by such a system, and their own emails slow to a crawl?”

“A Reverse Non-Delivery Report attack occurs when the spammer takes advantage of a server's inherent ability to return email that is misaddressed.”

“If a would-be spammer had to perform one second of computation for each person he spammed, the pace of spam would slow to glacial.”

“Of course, what happens when a perfectly legitimate emailer is labeled as a spammer by such a system, and their own emails slow to a crawl?”