In the graph above I’ve arranged the 28 Threadiverse instances with at least 200 monthly active users (MAU)—orange instances running Lemmy, green Piefed, and red Mbin—on the basis of which instances they defederate.

Each instance has its MAU count listed below it, sourced from the latest MAU figures at Fediverse Observer, with adjustments made to the totals for Piefed (due to undercounting by outdated instances, as noted here; I used @Vicinus@piefed.zip’s suggested estimate of 7,200 Piefed users) and Mbin (due to tardigram.com having a duplicate listing).

After adjustments, there are an estimated 43,287 monthly active Threadiverse users (35,184+7,200+903), of whom 87.84% are on the 28 largest instances. The percentages listed alongside the MAU figures correspond to each instance’s share of the total MAU count.

Defederation data was sourced from Federation Checker. The tool doesn’t support Mbin instances, so I left fedia.io in its own category. If any defederations are missing, feel free to let me know. Ideally such a chart should also include community blocks to better illustrate which instances block what, but that data doesn’t appear to be as easily searchable.

I also noticed cases of some instances being listed as being defederated by another instance, despite not appearing on the defederation list for that instance (i.e. reddthat.com and lemmygrad.ml are listed as being mutually blocked, despite neither having the other on their block lists). In testing that federation, I noticed that !wholesome@reddthat.com did not federate to Lemmygrad while !memes@reddthat.com did, so clarification on that matter would be helpful.

While I’ll update my generalized chart as needed to correct errors, perhaps at some point an automated federation mapping tool similar to the one feddit.de formerly hosted could be developed to more completely illustrate instance federation.

    • SCmSTR@lemmy.blahaj.zone
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      1 day ago

      Since defederating is essentially an explicit block list and is directional, my assumption is that the groups that are circled have defederated from the things they’re pointing at. I could be wrong.

      Map needs a key/legend.

      The red circled stuff seems to be only one possible option, but isn’t visually very distinct, and the red circle shouldn’t be broken like that, just make sure the lines are all visible.

      • Zedstrian@sopuli.xyzOP
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        1 day ago

        Apologies for the confusion; didn’t want to make it overly cluttered, but in retrospect I see that a legend would have been useful. I’ll incorporate suggestions in a revision.

    • mehquestion@lemmy.world
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      1 day ago

      Yeah, as someone who is struggling to understand the concept of federation…this doesn’t help me at all.

      I guess what its saying, if you’re on lemmy.world, you can’t access content on lemmy.zip?

        • scytale@piefed.zip
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          20 hours ago

          Yeah, .zip gives its users full autonomy to block instances/users as they see fit, which is why I’m on their instance.

          • AlteredEgo@lemmy.ml
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            18 hours ago

            It’s a question if history is real and if it matters or not.

            A big contention is about the historical and political reality of Ukraine (spoilers in my instance .tld)

            The “anti western” communists claim that the USA publicly bragged about doing a regime change on Ukraine, like before they did it, and the CIA affiliate even published the money they supported the organizer of the euromaidan protests with on their own website. Besides trained him. They also claim there were Nazis and that there are newspapers reports about this. They even unironically want to rehabilitate Stalin and the state violence of the great purge that passed about 10% of the population through a gulag! Imagine doing this in the USA today with all the MAGAts and corrupt officials and landowners in order to reeducate them and prevent a counterrevolution!!! Clearly they are insane.

            And these are all lies because that is what Putin says and Putin is evil. So the good liberals of .world rightfully point out that all this is nonsense and Ukraine has always been neutral and the revolution of dignity must not be impinged by dirty commies. We’ve always been at war with Eurasia. The liberal socialists agree that this is a time where we need to band together and return to normalcy, because obviously we can’t have all this aggravation and it’s better to be inside the tent pissing out, no matter much fun it is to be on the outside pissing in.

            This is all besides the question of ideology, collectivism and all that unamerican crap lol.

            My personal opinion: You cannot have rational discourse with insane people in an insane society. It also means lemmy has failed as a global medium for meaningful political discourse. While the communist instances (the original developers btw) are pretty extreme and hostile, .world managed to monopolize much of lemmy and enforce (neo)liberal majority opinion on lemmy.

            Obviously this is all satire. Nobody is planning a global war on democratic socialists or something.

          • khorovodoved@lemmy.zip
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            1 day ago

            Ideological differences. Lemmy.world is liberal, while lemmygrad and hexbear are hardcore communists (aka tankies).

            • WhyJiffie@sh.itjust.works
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              1 day ago

              I believe its not the hardcore communism but the style of users on those instances. hexbear users were brigading communities of other instances, and their moderators did nothing. they earned it.

              • yogurt@lemmy.world
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                20 hours ago

                No hexbear was never federated. They started discussing whether to federate and writing moderation rules, sent them to other admins for input, and .world preemptively put hexbear on their defederation list. .world basically said it was ideological differences, they posted all the parts of the draft hexbear rules where they were explaining that hexbear was communist/anarchist and anti-western, and that was just a self-evident reason to preemptively defederate.

                • WhyJiffie@sh.itjust.works
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                  12 hours ago

                  oh, that’s right, forgot how .world was with it. but they earned it for the rest of the fediverse.

      • ProdigalFrog@slrpnk.net
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        1 day ago

        The ones at the bottom that are below the None category aren’t defederated from anyone, so they can access every instance.