A podcast is an episodic series of digital audio files that a user can download in order to listen. Podcasts are similar to radio programs in form, but they exist as audio files that can be played at a listener's convenience, anytime or anywhere on a computer or mobile device.
Some people describe podcasts as “radio on the Internet,” but the medium of podcasting has become so much more. From serialized fiction to uncensored comedy to long-form news reporting, podcasts are becoming an increasingly popular resource for entertainment and information. You can listen to podcasts using your computer or a mobile device such as a smartphone or tablet.
Podcasting often uses a non-payment subscription model, whereby new episodes automatically download to a user's own local computer, mobile application, or portable media player. The vast majority of podcasts do not accept payment from listeners. Podcasts earn money via advertising, just like the radio. The word subscription in the instance refers to your agreement to allow new episodes to be downloaded to your device.