here’s an idea
How about a snopes.com e-mail filter? Anytime you receive a FW: (especially if it’s addressed to more than five people), it scans it against the snopes database. If the content matches a known scam, the filter auto-replies with “IT’S A HOAX”. Perhaps a picture of Admiral Ackbar.
I mean, it’s not like it’s a terrible ordeal to delete this crap, but it’s sooooooooo 1997 to get them in the first place.