I love podcasts, but I find annotation and pinning very difficult. So many gems are lost once I hear them. I do absorb it, but I cannot reference where I heard it. How do you save the snippets, how do you tag them? Same problem with Audible/audiobooks -- I write notes on the app's note-taking feature but those are mostly lost w/r/t context.
For non-audio, I use EverNote heavily.