BBN Technologies launched Podzinger, which uses speech technology to convert to text the contents of 60,000-plus podcasts. Since it can search through the text of podcasts, it can better determine the relevance of search results to help you find what you’re looking for.

There are several China-based blog search engines that do very basic searches, such as feedsearch, 8fang, feedss, and Bokee’s Booso.

However, none of these blog search engines have the capability of searching podcasts, which is unfortunate as Podzinger is an English only podcast search engine.