But that's not the best part.
The best part is that you can subscribe to the feed to get all that info podcast to you. Here's the feed for San Francisco, for example.
Give it a shot with your town, it's pretty neat.
It also got me thinking about the way podcasts are organized on the iTunes Music Store. It's quite easy to add geographic information to a feed. My site feed has gps data embedded in it, for example. There should be a way to search the iTunes Music Store's podcast page for feeds based on their location. It's such a no-brainer, and uses information that a lot of feeds are already publishing anyway.
In fact, I'd so like to do this that I hope somebody makes me look like a dumb-ass by showing me exactly how it can be done in the iTMS.