I'd like to see the ability to regroup communities (at the user level, not visible to everyone) where the posts with an identical URL are regrouped as a single post. Would be useful to scan the news at least, without having a ton of duplicates.

So I'm actually against this idea. For some communities, the subject is the important thing. But for others, they're competing and they have different standards. Take memes for example. There's a memes community on every instance. Why would Star Trek memes be grouped with Solar Punk memes?

What I would say, is that some people are still stuck on the idea of karma and so they're desperately trying to spam their posts in every relevant community like clout matters. What they'll eventually realise is that they're just spreading their engagement and failing to support any of the moderators.

what idea? i must be missing something, i only see the description of the problem, but not an idea of a solution?

I don't see this as a permanent fix. If this is easily implemented, I wouldn't be against it, but like all things sync, I would hope the feature would be OPTIONAL!

I might be wrong but I think this issue is due to the fundamental way Lemmy works (separate instances) and I'm not sure it's possible for Sync or any Lemmy app to do what the user Lvxferre suggested, although it's a wonderfully elegant suggestion.

I don't know, recently there were articles on Google's Web Environment Integrity published on different communities and each of them had slightly different takes in the comments, I feel de-duplicating posts would make me miss some part of the conversation or at least some of the point of views expressed in the different communities.

I would love it, been waiting for clients to do it.

Do it like Ground News where it shows you stories, then when you click on it, it shows you the sources. Default click goes to your local source, but maybe add a button to view the cross posts.

In some ways a check box to block all bot accounts might be nice.

It would help to merge them in some way while viewing a profile that constantly reposts their "content" to several communities at once.