Vitor Pamplona on Nostr: Correct. So separate from the automated anti-spam filter (which is an Amethyst ...

Correct. So separate from the automated anti-spam filter (which is an Amethyst thing), there is the usual Nostr reporting system with NIP-56.

In that system, people can report you for Spam, Scams, Explicit Content, Impersonation, and/or Illegal Behaviour. Anyone can report you or your posts at any time. Reports are saved on relays and might last forever. Many relays use that information to delete posts they don't want on their servers.

Your reports only affect the people that are following you. When you report content, you add a warning sign for your followers. BUT that warning sign only shows up if 5+ accounts that a user follows reported the same note.

So, alone, a reporter cannot do much damage. But if there is some agreement among the people a user follows, that user will see a warning post that shows who, among the people he/she follows, reported the post and a "Show Anyway" button.

At that point, they can agree with their follows and also report that content or simply hide the reported user from their view entirely, OR they can disagree and report the reporter.

If the report is not for a post, but for a user, a similar 5-reports-among-follows happens. BUT, for users, we cap the report in 24hrs. So, if your user (and not a post) gets reported today, tomorrow the followers of the reporter will start seeing your posts without the warning again.

The reporting system does not hide posts from global feeds or chats, it's only between the user and the people that user follows.

For instance, I have 100s of reports on my user. Many of them were deleted by relays that evaluate reports. But I believe 108 are left out there. Those reports only affect the followers of the reporting accounts. Since they are mostly random accounts, it doesn't affect anyone.