Interactivity:The Internet allows your customers to communicate directly with you; they can tell you what they do and don't like, what they want, and what they will buy. They spend as much time as they choose with any amount of information you provide.
Compared to Radio:According to a 2011 Adweek-Harris Interactive study, 63% of American consumers say they ignore or disregard all Internet ads. In contrast, only 7% made the same claim for Radio ads. (Media Matters, 2011)