What Everybody Ought To Know About Podcasting: Part I | The Edublogger
http://theedublogger.edublogs.org/2009/05/26/what-everybody-ought-to-know-about-podcasting-part-i

"What Everybody Ought To Know About Podcasting: Part I May 26th 2009 by Sue Waters in Working With Web 2.0 Tools - 56 Comments " Good explanation of podcasts in blogs.