@silverpill Are there any FEPs for object expiry? Had some ideas recently, while also peeking at Nostr, which has their counterpart: https://nostr-nips.com/nip-40

There would be no expectation as some privacy/'security' feature, as it would be MAY rather than SHALL, and generally just to keep databases from permanently storing superfluous ephemeral events. This would be in scope primarily with servers and not so much with affecting client behavior.

This specifically would be ideal for things of short-term or instant messaging contexts with ActivityPub; perhaps also outlining some recommended defaults. e.g. instant messages that have an expiry of 30 days, music/game scrobbling events of a 5 day expiry, etc.

Nonetheless it would help cut down clutter and make it less painful for using ActivityPub as a transport for ephemeral content too.