How To Confuse Your Boss...Or anyone else

If you put positivefeedback@careerbuilder.com in the BCC part of the e-mail, and you e-mail your boss or somebody else then you will both get an e-mail back from "Cynthia" "Dubster" etc. commending your hard work, regardless if it's relevant to what you actually wrote. I've been using it at work with my friend and it sends some pretty funny messages. I'm not brave enough to try to mess with my supervisor's mind..at least not yet.