I wondered which podcast hosts support things like compression, etags and last-modifieds (all of which make scraping for content easier and cheaper).

James Cridland

Surprising how few support all four - especially last-modified, which is really, really easy for a podcast feed (you *know* last-modified, since it's the latest episode in the feed).

Podcast RSS feed testing

We ran some tests for podcast hosts - checking gzip, etag, brotli and lastmodified support

Podnews (podnews.net)