Radio continues to be a highly effective advertising medium. It reaches over 235 million weekly listeners in the US, including 93% of Americans. Radio listening is growing while other media like newspapers are declining. Americans spend the majority of their listening time with AM/FM radio compared to other audio platforms. Case studies show that radio advertising can significantly boost sales for retailers like Walmart and drive new business leads and accounts for financial services companies. Testimonials from companies like Google, Citigroup, and Scion affirm radio's effectiveness compared to other advertising media.