Good to know, thanks!

Ah that must be it sorry. I thought they had decorelated phone numbers and IDs

Groups have an encryption key that I guess you receive from other members upon joining.

Spaces is an underused feature that I hope see gain more traction! It makes Matrix a credible competitor to Slack and Discord

Not really, have used it for years like that. But you need to set it up initially on your phone. The newish feature (less than a year) is that I think they do not require a phone number to set up a new account.

That’s really interesting! It shows which communities share users. I am part of jlai.lu, a french-speaking community that is relatively isolated by also slrpnk.net that seems very spread out!

Would it make sense to compute the standard deviation of each instance’s communities? It would give an idea of which are islands and which are more extended. Not sure if it makes sense to compute it more on 2 dimensions or on the original 21934 though.