Just answered my first question:
https://www.reddit.com/r/podcasting/comments/xciarj/comment/io5d2wx/?utm_source=reddit&utm_medium=web2x&context=3

Mentioned @BryanBarletta & @webby2001's @SoundsProfNews as a place to learn about podcast adtech.

Also suggested that more people build listening apps to support @PodcastindexOrg's cool new features!