Surprise : in USA, Radio win !
Despite a recent flood of studies and marketer statements validating returns from Facebook and other digital media, radio beats most of those glowing digital ROI numbers in a study of 10 brands that advertised on Clear Channel stations. The study is from Nielsen Catalina Solutions, which combined data from Nielsen's newly acquired radio-audience measurement business with shopper-card data from Catalina.
[Sources : Nielsen Catalina Solutions]