This is exactly the sorts of discussions Christians must be having. I recommend digging into folks like Jacques Ellul, Ivan Illich, and Egbert Schuurman. All three (operating from different theological viewpoints, mind you) have concluded that technology can be a dangerous force, one that is almost autonomous in its growth. This is Schuurman:

Technicism* has produced a powerful linkage between science and technology. The result is a technical complex on which humanity is becoming every increasingly dependent by of which lacks an overview. In order to grasp this deficit, we may well listen to the French philosopher Jacques Ellul. From the standpoing of his philosophy of culture, he deals at length with the combination of science and technology. The scientific basis of technology and the scientific method of design, according to Ellul, are the reasons for the clear line of distinction between modern technology and traditional, craft-based technology. That view is correct. For Ellul, something is at work in the interrelationship between science and technology that culminates in the autonomy of technology as a law unto itself. I endorse this analysis with the proviso that, when science and technology are subject to the influence of technicism, there is no escape from the prospect that the two, united in a grand unholy alliance, will control everything.

Illich saw technology in terms of its conviviality--how it builds human relationships (real human relationships--not virtual ones). I wrote this about Illich:

[...] Ivan Illich’s concept of conviviality which envisions technologies and institutions that allow for individuality (rather than impersonal conformity) and the growth of meaningful, productive interpersonal relationships. His vision for “learning webs” in Deschooling Society were to be built on just such technologies. Networked computers could be used join individuals who pursued the same learning activities (Illich’s vision was rather prophetic, given that Deschooling Society was written in the 1970s). Technology is not to be feared, or avoided, but used in ways that will build up human relationships. “Love of neighbor” is again the rule.

Good question, Expat. I guess my initial thought is that Podcasting need not be a substitute for attending church and the fellowship that follows, but can instead be utilized as an additional teaching and learning tool. Certainly some use it as an excuse to not attend and spend time with their church family, but I'm guessing that's not the most common use of such broadcasts. I personally subscribe to two podcasts from churches down in California. I am not a member of these churches, nor do I intend to become so...geographically that would be a challenge! Nevertheless, I gain a great deal by listening to these pastors. I love the preaching at my church, but I greatly appreciate the ability to learn from various men across the country who bring other experiences and perspectives to their understanding of the Gospel. In that regard, I would guess that yes - Jesus would podcast!

-Brian