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Lemmy.world is now the #1 lemmy instance with 37k users!
(lemmy.world)
A community to talk about the Fediverse and all it's related services using ActivityPub (Mastodon, Lemmy, KBin, etc).
If you wanted to get help with moderating your own community then head over to !moderators@lemmy.world!
Learn more at these websites: Join The Fediverse Wiki, Fediverse.info, Wikipedia Page, The Federation Info (Stats), FediDB (Stats), Sub Rehab (Reddit Migration), Search Lemmy
They can contribute to the same communities, but communities live on specific instances.
The main difference between instances is the moderation policy and who runs it really, but nobody is generally missing out anything depending on the instance they choose.
There is one exception to the above, which is when instances defederate each other. Imagine that instance A is full of content that is not accepted on B and C, B and C can defederate A to stop "talking to it". Currently beehaw has defederated Lemmy.world because of the amount of users and moderation capabilities, for example.
So would "communityA" on beehaw have different content to "CommunityA" on Lemmy.world due to the defederation/(block)
jokes on them, they can't even see communities on lemmy.world however we can still see their posts