If you've listened to the radio, turned on the TV or seen any billboards, these tag lines are probably pretty familiar:
"Loose lips sink ships."
"Only you can prevent forest fires."
"A mind is a terrible thing to waste."
"Take a bite out of crime."
They're just a few of the many ads created by the Ad Council, a nonprofit organization that was founded in the 1940s by the leaders of the advertising industry and President Franklin Roosevelt.