Dr. Kathy King and Peter Yanke led a session at the International Podcasting Expo exploring the difference between internet radio and podcasts.

From their slide, here are the characteristics of Internet radio:

• Delivered to a computer via a web browser
• You click a button on the page and listen to the content
• It’s not portable

And from their slide, here’s the characteristics of podcasting:

• Posted on the web and pushed out by a feed
• Need a podcatching program to listen
• Posted on website for download or via a flash player
• Plus (this is my addition), it’s portable

With Internet radio, the listener shows up and listen. With podcasts, the listener downloads and listens on the go.