"sharedInbox endpoints SHOULD also be publicly readable OrderedCollection objects containing objects addressed to the Public special collection..."https://www.w3.org/TR/activitypub/#sharedInbox

"sharedInbox endpoints SHOULD also be publicly readable OrderedCollection objects containing objects addressed to the Public special collection..."
https://www.w3.org/TR/activitypub/#sharedInbox

I disagree with this SHOULD, would downgrade to a MAY.

Minor, mainly because consider a small instance, whose users do not show their Following collections, this could basically leak who the follows are.

That said, I haven't found any Software that does have a publicly readable sharedInbox!

#ActivityPub