this post was submitted on 20 Aug 2025
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Fediverse
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A community to talk about the Fediverse and all it's related services using ActivityPub (Mastodon, Lemmy, KBin, etc).
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I don't know how to check for the whole lemmy but seems it's growing a bit but the MAU dropped a bit probably because of august: https://fedidb.com/servers/lemmy.world
But the fediverse in general doesn't grow too much except when a scandal happens.
Watch out, the statistics might not say what you think they do.
"Total users" is a meaningless metric. All it showes is how many users aren't using lemmy anymore.
"Monthly active users" is the only meaningful metric, and it's fluctuating and currently going down.
"Activity growth" doesn't actually show the number of new activities per month, but the total count of activities. So with constant activity you'd expect linear "activity growth" and with growing activity you'd see the line curling upward. It is currently mostly linear but slightly declining.
So these statistics show a slow decline, not an increase.
But in a way you can be happy that it doesn't grow a lot. With the base architecture of ActivityPub (every instance contains a copy of everything, all content needs to be propagated to all instances, all content needs to be duplicate-moderated by all instances' admins) it is absolutely not designed to handle large amount of users.
If only a tenth of a percent of Reddit users were to switch over to Lemmy, everything would grind to a halt and most instances would have to close down because running them would become to expensive for a non-profit project.
Yeah one has to be careful with statistics and I couldn't find the whole Lemmy in one place so it's also not representative of the whole Lemmy.
I thought ActivityPub did scale well and was ATProto (Bluesky) which had a lot more issues. I mean I can comment on Peertube using my Mastodon account meaning the whole Fediverse is properly connected and we are 1M MAU so I would say it already scaled good.
The user you are replying to has specifically sourced lemmy.world data there, which is not going to give you an overall for the wider fediverse.
That link is just hanging for me.