I like the idea of providing paid content on the Fediverse (even though I do not pay for such anywhere currently). https://sub.club/ implements it via premium accounts and DMs but I wonder if we could (and should) enhance the protocol to allow for payment.
At the start only two clients will support it natively because of that.
@ChristianKrebel I doubt there's any practical need to bolt some payment related vocabulary on ActivityPub.
The Fediverse is not suitable for disseminating very sensitive information like payment data so it's wiser to keep it orthogonal. Instead I think services should allow individually integrations with _existing_ payment providers.
Liberapay would probably be the best choice, as it has similar ethics and goals as most Fediverse projects.
Sure we can add an activity/object as a congratulatory side-effect: "Bob paid/subscribed/cheered for Alice", but that should be just cosmetic.
@mariusor yeah, I think I wasn't specific enough. I like what you said, more of a cosmetic way like setting a flag or redirecting to the right payment service the user set. 