ActivityPub: a federated social web standard
So, about that federated DELETE operation. In a decentralized network, we can't unilaterally delete a shared piece of content; that is one of the main features of decentralization. Even providing that verb seems kind of deceptive to me; it implies that content that enters the network, could conceivably be purged, which will affect how people use the network. Perhaps DISOWN would be a more accurate verb, especially if it would only be accepted from the original owner.