[nordsieck]

> We really need federated communicator.

Federation has enormous downsides: since anyone can join the network and send messages, there aren't good ways to police bad actors.

The two largest federated communications networks today are email and PSTN. They're both infested with spammers.

[pm7]

Yes, there are downsides to federation, but I would argue spam is not inherent to federated communication.

There are many ideas to stop spam like proof of work.

Main reason for spam in email and PSTN is legacy protocols, which were created long time ago and cannot be significantly improved without breaking compatibility.