Podzinger, the service that allows users to search podcasts word by word has changed its name and it is now called EveryZing.
You can "zing" ( search) video and audio podcasts or look for your "key terms" under broad categories ( Channels) like " Business", "Food *& Cooking" , "Entertainment".
"Unlike other general web search and aggregation services that work only on meta data and tags, EveryZing leverages its unique speech to text, search, and optimization technologies to unlock the content within multimedia and automatically process and organize it to power a compelling ecosystem which easily connects media companies with publishers, consumers, and advertisers."
I did a couple of searches and was impressed by the new service. You can try it too.