Podcasts v.s. RSS

Podcasts is just an application of RSS. It deliveries video files broadcasting to its subscribers. It is really easy to find things of your interests from the Podcasts directory, like Podcast.net. One Podcasts I found from the Podcast.net is the Sunnyvale Public Library Podcasts. There are 10 videos published in last year and nothing has been uploaded in this year. I am just wondering about its current situation. So what we can learn from this case is that new tech won't save the world. Facing the storm of the Web 2.0, we have to find the real problem we are facing right now before we jump into any tech fantasy.