[–] 2 points 12 hours ago

I'm not familiar with Hubzilla, but it would seem fairly trivial to make it possible to address channels explicitly in a Multiselect field somewhere, rather than it being implicit by mentioning their handle in the body. In the case of Mastodon it's just the UX they want to go with I think

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  • [–] 2 points 13 hours ago* (2 children)

    In ActivityPub you are only supposed to be able see the activities from the people actors you're following. In order to tell an ActivityPub server like lemmy that something should also be viewable by the public it needs to be addressed to the special public group "https://www.w3.org/ns/activitystreams#Public".

    When a lemmy user makes a post, their instance can't just send the post to everyone in that community, because the other members are only following the community, not every other individual member in it. So instead they will simply address the post to the community-actor, and that actor will then announce/boost that post to all the members.

    I think in lemmy posts are also generally addressed to the public to make them viewable by non-members in the Local/All feeds. So when a lemmy community-actor is receiving a post, I'm guessing that it requires that post to already be addressed to the public, because otherwise it might be publicizing what was supposed to be a private post.

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