UPDATED (to be more precise in the answers I seek)
In your mind, is it:
"A podcast is like radio" ("radio" the medium, not the hardware/technoogy)
or
"A podcast is like a radio show" (the usage of the medium)
?
The difference is VERY significant. Please think about it and let me know.
Answers to this question very clearly indicate biases based on usage and understanding of what is, fundamentally, a profoundly simple thing: a media file URI culled out of a "blog entry" and highlighted in some fashion ("enclosures") in a syndication feed...