The 10 Biggest Spam Myths: "The more spam panels, conferences, and symposia I attend and the more spam articles and press releases I read, the more I hear certain facts, figures, and other received ideas cited and re-cited. They're then duly parroted in the media. Some enjoy a measure of validity. Most can be filed under 'say it often enough and they'll think it's true.'"
This should really be 9, since number 7 is pretty true. Trying to tell someone that sends you five emails a day for penisdrugs that you don't want them, probably isn't going to work. Heck, telling them you are a blind lesbian who doesn't read probably wouldn't help.