Make Snopes Your Friend
All right, the Internet has been around awhile. It's 2006. Civilized people have high speed connections and even grandmothers have e-mail addresses. So, why, why am I still getting chain letters? Why are people still sending me alarmist forwards? People, stop believing everything you read online!
Case in point: A friend who has been online at least since 1994 sent me something about carjackers putting leaflets on windshields. I couldn't believe this nonsense was coming from someone who was born the same year as I. So I sent back the link from Snopes that debunked the story and haven't heard from her since.
I'm thinking of making a link to Snopes my signature so that it goes out on every e-mail I send. But then, I'm kind of over signatures, too.