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the latest MAU figures at Fediverse Observer, with adjustments made to the totals for Piefed (due to undercounting by outdated instances, as noted here; I used @Vicinus@piefed.zip’s suggested estimate of 7,200 Piefed users) and Mbin (due to tardigram.com having a duplicate listing).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

    • Zedstrian@sopuli.xyzOP
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      10 hours ago

      The MAU numbers for instances were sourced from Fediverse Observer and calculated as a percentage of 43,287 for the percentages, but here’s a table of the defederation data:

      Lemmy
      Instance Defederates
      lemmy.world Hexbear, Lemmygrad
      sh.itjust.works Beehaw, Hexbear, Lemmygrad
      lemmy.zip N/A
      lemmy.ml fedinsfw.app
      feddit.org fedinsfw.app, Hexbear, Lemmygrad
      hexbear.net lemmy.world
      lemmy.dbzer0.com Lemmygrad, Feddit.org
      lemmy.ca Hexbear, Lemmygrad
      lemmy.blahaj.zone fedinsfw.app, Hexbear, Lemmygrad
      programming.dev Hexbear
      discuss.tchncs.de Lemmygrad
      sopuli.xyz fedinsfw.app, Hexbear, Lemmygrad
      lemmygrad.ml fedinsfw.app
      lemmy.today N/A
      slrpnk.net Hexbear, Lemmygrad
      feddit.uk N/A
      infosec.pub fedinsfw.app, Hexbear, Lemmygrad, Lemmy.ml
      reddthat.com N/A
      jlai.lu Lemmygrad
      beehaw.org sh.itjust.works, lemmy.world, Lemmygrad, Hexbear
      pawb.social Hexbear, Lemmygrad
      thelemmy.club N/A
      feddit.nl N/A
      Piefed
      Instance Defederates
      fedinsfw.app Hexbear, Lemmygrad
      piefed.social Hexbear, Lemmygrad
      piefed.ca Hexbear, Lemmygrad
      piefed.zip N/A
      Mbin
      Instance Defederates
      fedia.io ?
      • Crescent@fedinsfw.app
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        6 hours ago

        What the hell are Hexbear and Lemmygrad and what did they do that everyone’s blocking them?

        • yetAnotherUser@lemmy.ca
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          47 minutes ago

          Lemmygrad and Hexbear (I think) are instances filled with “tankies”, which means that they can’t shut up about how awesome authoritarian regimes that present themselves as communist, like China, and some others, like Russia, are, despite all the crimes against human rights those countries’ governments keep committing (according to tankies, the governments they support don’t actually commit any atrocities, it’s just “lies spread via anti-communist propaganda”, which they also use as a excuse for silencing anyone presenting criticism about their favourite regimes). Please keep in mind that lots of communists don’t see countries like China as communist, despite the countries calling themselves that.

          As these instances have lots of tankies, they tend to have toxic communities. Their users also tend to hate trans people for some reason, and sometines try to harass people because of it, which is a big no-no to instances that want their trans users to feel safe, such as Blåhaj Zone.

        • Krono@lemmy.today
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          5 hours ago

          Lammygrad are Marxist Leninist, Hexbear are dirtbag leftists. That makes them the natural enemies of center-left and centrist instances like .world.

          In my opinion it comes down to a disagreement over capitalism. One side wants to destroy it, the other side wants to moderate it.