Podcasting inherits both the potentials for domination and for liberation in these previous forms of media, and it also contains new potentials by virtue of being a new medium. Podcasting is like radio, for example, but podcasts are importantly not radio programs. To uncover what exactly is (or could be) radical and pedagogical about podcasting, a look at other forms of media and how theorists have thought about them helps to articulate continuities and discontinuities.