@matigo That's interesting. I don't think you need to ask permission for that, although you might want to notify people. Two gotchas of which I've become aware. One is that direct download links don't work now for so many shows that host via a silo like SoundCloud. That's something I'm going to continue to complain about whenever I get the opportunity. The second is related, which is that I subscribe to a couple of newsletters about podcasts, and they happily link to shows hosted in such a way, so that it becomes hard to listen to even a single episode -- so I don't bother.
But I'd say, go for it.