Yes, its very common.
There was well publicized scandals: facebook blocking linux information, facebook blocking pixelfed info, or twitter blocking signal, or twitter blocking mastodon info.
I almost never use facebook, but once I posted info about another highly important topic (non-open source) which is well known META company specifically oppose, and it disappeared immediately (on privacy guides it is: The catastrophic risks of AI — and a safer path)
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Post automatically hidden for seemingly no reason | 1 | 362 | November 20, 2022 | |
| Let anonymous accounts flag posts | 4 | 296 | May 10, 2025 | |
| Blocking/Muting certain users, possible? | 16 | 278 | November 15, 2024 | |
| Restrictions on or Changes to News posts | 12 | 365 | May 5, 2025 | |
| Critics got banned from r/tutanota | 8 | 780 | December 14, 2023 |
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