And you're probably expecting a lot of charts, graphs, and research data. Your time is limited, and we can only write so much here before your mind drifts elsewhere (statistically speaking), so here are some bullet points from the Radio Advertising Bureau:
Pretty compelling stuff, right? But for a moment, set all that aside and consider one important fact. We only advertise this website on the radio. You're here reading it...which means that RADIO ADVERTISING WORKS.