I'm also thinking that, for each podcast, a user could choose an optional "nickname" for that podcast, where the "nick" field would be populated with every keysend payment. That way, a listener could have unique identities for each podcast they are supporting to increase privacy.
If they want to be anonymous, they just leave it default blank.
@dave _identifier is a static value for a sender (listener), up to the application to use a per-feed or podcast-wide identifier. In the future, identifier+signature can be sent as a header, and websites (podcast hosts) can serve different files._
Intended for all stake holders of podcasting who are interested in improving the eco system