Sometimes, users may want to share an information or a story without inviting replies from outside their circles or from anyone at all. In particular, individuals may want to restrict who can reply to them in order to avoid “reply guys” or limit outright harassment, while instutions may want to disable replies on their posts to provide information without having to deal with a moderation burden.
This FEP intends to provide a mechanism to address that, by advertising a reply policy and providing means to check whether an actor has approved a reply.
The software SHOULD NOT offer the user to reply unless it is directly mentioned in the object's `tag` attribute or listed in `canReply` (either directly or through a collection), or `canReply` contains a collection for which the recipient cannot efficiently check the membership of the would-be replier.
After locally verifying that the replier should be allowed to reply, the replier's end SHOULD `POST` the `Create` activity for the reply to the authority's inbox *only*, and consider the reply to be pending approval.