my feeds seem to all be: `<title>.libsyn.com/...`, `anchor.fm/.../rss`, `feeds.feedburner.com/<title>`, `feeds.megaphone.fm/<title>`, `feeds.simplecast.com/<title>`, `omny.fm/show/<title>`, `rss.acast.com/<title>`, `rss.art19.com/<title>`, and then a bunch of `<showname>.com/rss` for shows which host their own website and link a feed from there.

i recognize art19 as an amazon thing, and megaphone as a Spotify thing (or a thing which Spotify acquired?). i have no idea what any of the others are associated with. is one of those websites run by Apple?