Searching podcasts: podscope
Podscope is a search site for words spoken inside of podcasts. I had submitted my Drexel CoAS E-Learning podcast a few weeks ago and some searches are starting to pop up. For example, a search for "Drexel" pops up Laura Blankenship's talk where she mentions Drexel 3 time. All 3 occurrences are found and Podscope make it easy to listen to each one directly.