I guess it's just my day to be overly sensitive.
"As long as you have grandma and grandpa windowuser out there clicking on every email they see ..."
faradhi, their behavior would be the same if they were running Linux or a Mac. They'd still be clicking on their messages indiscriminately and providing economic feedback to spammers, regardless of their OS, e-mail client, ISP, or hardware class.
Chad, I'm surprised there aren't more comments on this topic. I think it's timely, and relevant outside the realm of security (economics, infrastructure, protocols, sociology).