@firstname.lastname@example.org secondary consideration: If the FBI, CIA etc. approach an instance runner, they are much more likely to shut down their instance than kowtow to secret back doors they're not allowed to talk about, since they don't have any shareholders demanding their return on investment.
As decentralised systems take root, it's important that if an instance owner suddenly announces "back up and move I'm closing down in a week" we don't think they're running from something bad they did.
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