These guys have a great site! 
Check out their Rumor & Hoax control page! Even a link to Snopes! Way Cool! Worthy of the Mighty Cecil Himself.
This is a primary reference source for any true SDMB member.
You also have to love the names of some of their publications. I have a friend who used to be an editor at the CDC whose ambition was to work on the Morbidity and Mortality Weekly Report, aka “Death and Disease This Week”, back when it was a print-only affair.