Amy Gahran is all about conversation. And she's been musing about how we can make podcasts more conversational.
Here's what I'd love: I'd love to be listening to a podcast on my MP3 player, and hear something I want to comment on. I hit pause, and then speak my response as a quick voice recording (separate audio file). My player would automatically encode my comment file with metadata about the podcast episode I was listening to. Then, next time I attach my MP3 player to my computer, my podcatcher software would automatically spot any comments and upload them to an appropriate place on the podcast's web site. Then they would appear with comments, but as downloadable audio. (Ideally, accessible via feed.)
As I posted in Amy's comments, I'm not sure I see the point of this. A lot of bloggers have written recently about how blogs are not really as conversational as many people think. I agree that there are drawbacks for blogs as a one-on-one conversational tool. It's not exactly "instant messaging." But as a tool for global conversation, blogs are fantastic. And this is where their value lies.
The point applies to blogs, too. It's just not a great way to facilitate one-on-one back-and-forth conversation with a listener. And I'm okay with that. All forms of "new media" don't have to be equal in that area to remain valuable tools.