CNET News.com: Stage two of the podcasting revolution

Enter Podscope: the first search engine built specifically for podcasts. It was developed by a company called TVEyes, which specializes in audio and video files that are text-searchable (ironically, the company recently licensed its technology to Yahoo for video searching).

How does it work? According to TVEyes CEO David Ives, the core of the system involves a spider that plays each of the podcasts it tracks and then runs a speech-to-text algorithm on it. When you search Podscope, you're searching that database of transcribed text. Find something you like and you can play the entire show, subscribe or listen to just a snippet that includes the word or phrase you entered.