@dansup I think, the active user number shouldn't be higher than Dunbar * number of administrators and moderators on the node * 0.75.
And as most of the Fediverse's nodes are one-person enterprises, yeah, this is not higher than 200, give or take.
@clacke Probably, but the idea is you can't physically be responsible for more people than you can know at any given moment.
@dansup another way to approach it is to set the user population limit as a multiple of the number of moderators. As the number of people formally acting as moderators goes up, more registrations can be allowed. For example, 150 users per moderator, although different numbers could work depending on the character of the instance. I guess you'd still want to set a hard limit though, for cases where you get a rash of moderators volunteering and then quitting too fast to be replaced.
IMHO, I think average monthly users should be the criteria for calculation. On an instance with close to but not quite 200 active monthly users, it's still _very_ quiet. And since there is no federated timeline on each instance (yet?), there is very limited material to browse through.
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