The default webUI de-duplicates cross-posts. I don't know if any apps do.
They have to be actual cross posts though, don't they? Would that catch the same link spammed across multiple instances and communities?
There are no "actual" cross posts. Cross-posts on Lemmy are just all posts that have the exact same URL in the URL field.
Yeah - I think anything the UI is doing, it's getting the info from the API, so the poster would've had to use the 'cross-post' feature. There are some apps (e.g. Voyager) that try to wrangle cross-posts by title or URL, but title-matching can give false postives, and URL-matching usually assumes that one link hasn't picked up some cruft, and it can't do much for uploaded images if the poster didn't cross-post (because it'll be 2 different files with different URLs)
Different people posting the same URL get their posts linked up as cross posts.
The cross post button just copies the post text into a new post. It doesn't do anything special.
Oh, right. Sorry. I've gone back and checked the post I was thinking of when I made that comment, and - yeah - it turns out I was misremembering / didn't properly investigate the first time.
News to me! Good to know. Will have to see how that’s handled and maybe make pr to my favorite apps
If you find any with it let me know. Not hopeful for Sync.
There ought to be a way to tag a single post for multiple communities
I just block the users who do it. Requires a few seconds and then I don't worry about it again.
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