What is a podcast?

Podcasting, a combining of Apple's "iPod" and "broadcasting", is a method of publishing sound files (music, talk shows, lectures) to the Internet, allowing users to listen to sound files (.mp3) on their computer or from an iPod-type device.

Users may also subscribe to a feed and receive new files automatically by subscription, usually at no cost. It first became popular in late 2004.

(see iTunes music store, podcastalley.com, odeo.com )