The latest Rocketboom episode is a cross-over with TikiBarTV. With speculation that LaLa might have been considered as a replacement for Amanda Congdon, the cross-referencing is even more likely to generate buzz.
Yes, as many have been saying, the new personalized/community-oriented syndicated online distribution systems for content (all these “Web 2.0″ things based on versions of RSS and Atom) like blogs, podcasts, and vidcasts/vlogs are like an “echo chamber” or some other metaphor about self-referential, inward-looking, insular communities with rather high clustering coefficient. Cliques, so to speak. But not really elitist per se. And, in fact, not at all close-ended. Just groups which are their own little universe.