Warren Buffett is worth $84-billion dollars. Forbes magazine calls him "one of the most successful investors of all time."

In 1996, Mr. Buffett invested in GEICO and folded into the stable of 60 companies he owns. Today, it is the second biggest auto insurance company in America.

If you were one of the 288,946 consumers who tuned-in to a Fayetteville radio station last week, you most likely heard a GEICO commercial. That's because nobody invested more in radio advertising last week than GEICO.

Why would the third richest man in America invest so heavily in radio advertising?