Service joins Apple, AOL, Blinkx.

The podcasting world continues to grow, with Yahoo! introducing its version of a podcast aggregation service. Yahoo! Podcasts, currently offered as a public beta test service, allows users to search for podcasts by keyword or category.

The service also lists suggested podcasts based on staff recommendations, as well as the most popular podcasts selected by other users.

While it is available as a standalone service for now -- not bundled with the Yahoo! Music Unlimited service -- the beta site features a prominent link to the music service, indicating the company may bundle the two once the podcast service moves out of the beta stage. Rival Apple Computer bundled its support for podcasting directly into the iTunes music store.

Other companies offering podcast search services include America Online and multimedia search firm Blinkx.