What is a Podcast? What is a Videocast?

A podcast is like a radio show, except you can listen to it ON DEMAND on the Internet, your iPod, or any device that supports .mp3 files, or you can subscribe to it on iTunes or any "podcatcher".

A videocast is like a TV show, except you can listen to it ON DEMAND on the Internet, or any device that supports video files.  You can also find CVTV and iSNARK! videocasts on YouTube.