Internet radio have changed FM radio drastically. But Radio is still radio in the sence that it is broadcasted using a medium. so technically, internet radio is still radio.
This pamphlet is about how mobile radio marketing will be the future. It indicates that advertisers will shift to a more mobile based ads such as in pandora
This article contradicts the last one I just posted about revenue going up. But it is also from austrailia. Could Geographic location impact advertising on the radio?
GREAT ADVERTISEMENT article! Talks about how much the radio business really greats, from advertisement. The U.S. radio industry took in $17.4 billion in advertising in 2011
This article is about how an advertiser would go about getting air time on a radio station. The value here is that you would need to go through a 3rd party to advertise.