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I am new to the Fediverse. I vaguely understand how Lemmy instances broadcast content to each other, but I was surprised to find Lemmy communities on kbin. How does that work? (feddit.uk)

submitted 1 year ago by GoodKingElliot@feddit.uk to c/asklemmy@lemmy.ml

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And it also seems that mastodon can also be "syndicated" to these other communities, and vice versa? Is that true?

Are there limitations to any of this?

Apologies if this is not the perfect place to ask this question. I'm a lost old man. :-)

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[–] Zamboniman@lemmy.ca 5 points 1 year ago* (last edited 1 year ago) (1 children)

Yes, that is one of the features of being federated. Kbin and Lemmy and Mastadon (and others) can all federate with each other, so posts and comments are all shared. It doesn't really matter if you're on Kbin or Lemmy, you can see the same communities/magazines and comments for the most part, and interact regardless of which one you are currently logged in to.

[–] GoodKingElliot@feddit.uk 3 points 1 year ago (1 children)

Well, my understanding is that email is federated, and SMS text messages are federated, but it isn't easy to email a phone number, or send a text to someone's email. So I'm surprised that Kbin and Lemmy can talk to each other.

But I see someone else answered that Lemmy, Kbin, and Mastodon all speak the same underlying protocol, ActivityPub. Now it's starting to make sense.

[–] Tigwyk@lemmy.vrchat-dev.tech 1 points 1 year ago

It's easier if you imagine that kbin and Lemmy are simply the underlying email servers in this analogy and the email itself (content) is what's happening across the ActivityPub protocol.