BreakTheChain.org promises this:
There are all sorts of junk e-mails floating around the Internet, but perhaps the most offensive is the junk we send each other: bogus virus warnings, urban legends, offers of easy cash, letters that promise to help sick kids... the list goes on.
BreakTheChain.org tries to educate the world that e-mail is an unreliable medium for sharing information.
Other great sites to check out urban legends and hoax emails are:
KnowledgeHound.com and HoaxBusters. For computer virus hoaxes or myths, try VMyths.com.