Communities on different instances about the same topic should have the option to essentially federate so a post on one appears on all of them and opening any of them shows you the comments from all of them. This way when lemmy.world is down its not a big deal because posting to any news community federates to all of the communities instead of barely having people see your post. Federation could be decided by the community mods and the comments can have a little “/c/communityname@instance.name” on it so you know which community the comment was originally posted on.

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[–] Dave@lemmy.nz 3 points 1 year ago (1 children)

No, this is completely solved by my suggestion.

I 100% agree that we shouldn't push communities together. Instead, give the option for a community to nominate other communities where the content should be aggregated into the community.

Add an option as to whether the mods of those remote communities also get mod powers on the local community.

Behind the scenes, keep everything separate, but when generating the list of posts, aggregate posts across any listed community.

[–] 9point6@lemmy.world 2 points 1 year ago (1 children)

I guess that would mitigate most issues if that's possible within the activitypub protocol.

Though I wouldn't be surprised if that kind of mutually approved relationship between non-people doesn't exist as a concept out of the box. Possibly using the hashtag concept under the hood to do this, but that would not require the mutual approval in the rest of the fediverse even if Lemmy enforced it

[–] Dave@lemmy.nz 1 points 1 year ago

I think there are less hurdles than you'd think. Having content from another community served up when the feed is requested for the local community is a server feature not a federation feature. Moderators are the hard part, but in version one you don't need their powers to be federated.

It's the kind of thing you kinda have to just start trying (in a fork, say), then work out the kinks before putting the functionality into Lemmy. However, there are a lot more pressing issues at the moment, so it's probably something better left for down the line.