I can remember there was a concept of floating accounts on Matrix, similar to how groups are spread across servers. Accounts are currently tied to a server, but groups live until the last server participating in that group lives. If someone knows a link to a spec or something, I’ll be grateful. Will update this post once I find something.
Actually, this is kind of behind my vision of the decentralised future. Of course, I may be wrong, so let’s see how it evolves. The vision is that you, as a user, belong to a network of servers, which you must be able to browse and roam w/o significant effort (as soon as those servers are open to others), very much like public space in cities. Of course, there could be servers with restricted access, but the key idea of decentralisation is interconnectivity (apart from the primary idea of having more than one server).
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Interesting, what are the negative effects you mentioned?
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Hmmm, what can they propagate apart from the info I shared myself with my homeserver (which is not mandatory anyway)?
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If it happens even in encrypted rooms, maybe that’s a problem.
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Briefly, what’s sensitive in room state data? Who joined? Who replied to whom? Or maybe even “here’s the full list of emails and phone numbers of persons talking about a topic which is forbidden in a certain country”?