In an article published in The Washington Post, Marc Fisher discusses the future of traditional radio and the impact of iPods, among other personal media devices, on the industry. In particular, he notes the recent survey results of the Arbitron ratings company and Edison Media Research. “The iPod, Apple’s digital music player, is more like the transistor radio than any other gadget in media history, in that it is making a powerful entrance into the American home mainly through the teen market,” notes the story. “The Arbitron/Edison study found that about a quarter of American teenagers own an iPod or other portable MP3 player, a far higher percentage than in any other age group.”