The film/TV business has IMDB. The music business has AllMusic. And the podcasting business now has Podchaser.
If you want more traffic from Google, you (and your podcast) need to be listed on Podchaser. These "database" are consistently in the top search results.
You also can benefit by signing up for Podchaser's "feed" option, which is similar to the timeline on Facebook or Twitter. The feature is currently not available to the general public, but you can get early access by using "bigpodcast" as the access key.
Don't Let Your Podcast Be Ignored - Download my free "Audience Attraction Cheat Sheet" to get 25 podcast episode (and segment) templates.