this post was submitted on 05 Jan 2026
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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, Mbin, etc).

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Unfortunately, the popular MedMastodon server, dedicated to doctors and medicine, unexpectedly shut down at the end of 2025.

@fediverse

The speed with which it happened prevented users from accessing their data, highlighting the risks of decentralized social media without backups. Its administrator ceased operations, causing confusion and data loss for many healthcare professionals who had signed up as an alternative to Twitter.

This event serves as a reminder: Wherever you are on Mastodon, back up your data!

WARNING: To help Med-mastodon users who have returned to the Fediverse, the Poliverso staff has created the Friendica group @medmastodon

If you follow this group, you can:

  1. Follow it and mention it in your messages, and it will reshare all your public posts addressed to it (this only applies to an initial message, not a reply to another message).
  2. Follow it only to read all the messages from fellow doctors who send messages through it.

#MedMastodon

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[–] jeena@piefed.jeena.net 15 points 6 days ago* (last edited 6 days ago) (3 children)

Why doesn't centralized social media without backups have this problem?

[–] IronKrill@lemmy.ca 35 points 6 days ago* (last edited 6 days ago) (2 children)

Traditional social media is run for-profit and thus has an incentive to keep their website online as much as possible to keep their company alive by gaining users and revenue. And I would bet they do have backups. Hobby websites like fediverse projects often are can be run by any flaky nobody that can have varying motives and varying data retention practices.

[–] Gsus4@mander.xyz 16 points 6 days ago* (last edited 6 days ago) (2 children)

Any city council or minor public service or library could run their own instance, though, alongside the usual website. This doesn't have to be a hobbyist thing or for-profit enterprise.

[–] IronKrill@lemmy.ca 10 points 6 days ago

It doesn't have to be, but by nature of anyone being able to spin one up, people will end up on hobby instances.

[–] vatlark@lemmy.world 7 points 6 days ago

A library running one is a great idea. Seems well aligned with their purpose.

[–] jeena@piefed.jeena.net 11 points 6 days ago (1 children)

But the point is that this is specifically about the problem without backup, so either we compare apples to apples or bannanas to monkeys.

[–] OpenStars@piefed.social 3 points 6 days ago

Bananas 🍌 are sweet, monkeys are not (don't ask how I know 🙊).

[–] nasi_goreng@lemmy.zip 18 points 6 days ago (1 children)

They did.

There's almost hundreds of dead social media that inaccessible, some even have zero backups. https://en.wikipedia.org/wiki/List_of_defunct_social_networking_services

[–] jeena@piefed.jeena.net 4 points 6 days ago
[–] 0_o7@lemmy.dbzer0.com 4 points 6 days ago (1 children)

Usually they have VC money to burn through

[–] zaphod@sopuli.xyz 2 points 6 days ago

And/or they get bought by the competition.