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the latest MAU figures at Fediverse Observer, with adjustments made to the totals for Piefed (due to undercounting by outdated instances, as noted here; I used @Vicinus@piefed.zip’s suggested estimate of 7,200 Piefed users) and Mbin (due to tardigram.com having a duplicate listing).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


This place fuckin sucks man? It’s pretty much reddit for left wing progressives who specifically care about left wing American* politics, linux, and not much else
We are not interested in you recommending similar toxic people, as you support genocide in Palestine
That’s slander!
We also like Star Trek!
While it would be nice if there were more activity, when the alternative is the ever-enshittifying Reddit, our best option is to contribute what we can here, be as welcoming as possible to new users, and block any content that isn’t interesting to achieve a personalized feed of one’s preferred content.
You can always post eco-fascist Australian memes if that’s more your thing
@Zedstrian@sopuli.xyz this is what I mean, cunts everywhere in this place, why would I encourage anyone to come here?
Banned 1 day for being disrespectful. Next one is a perma.
I’m a cunt? I’m just encouraging you to follow your dreams.
You can even post anti-linux memes with that one other guy.
Unfortunately there are too many people here who would rather be brash and rude at the hint of any disagreement, rather than discussing civilly and promoting a healthy community that is not an echo chamber.
My best advice is to just block people who you find rude to make the remainder slightly less rude on average.
That guy was brash, but I somewhat agree with him. This place is full of people who left reddit for a multitude of reasons. Just think about that. Reddit didn’t suffice for the vast majority of people here, and now those same people are circlejerking each other in an echo chamber the size of McDonald’s PlayPlace tube. This is why Lemmy, in my opinion, won’t last long.
That and McDonald’s PlayPlace tubes smell like socks.
I also don’t think the Threadiverse should be an echo chamber, nor do I think that user deserved a temp ban for expressing their frustration with it. Ultimately, fewer defederations, more acceptance of differing opinions, and being welcoming of users who aren’t interested in politics are the primary viable means for the platform to grow beyond being a niche echo chamber.