Simply login and find your favorite podcast in search, and start making notes. Eventually, there will be premium paid features for the podcasters to subscribe to, but right now the service is free to use for anyone who would like to help and extend the human knowledge with all the interesting bits hidden inside podcast audio.

Andreessen Horowitz released a report saying there are 700,000 podcasts available and counting. That's roughly 80-years worth of audio. There is lot of work to be done to ensure that all that knowledge is unlocked and available to the world.