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Ideas to build a federated StackExchange alternative
(ioc.exchange)
A community dedicated to fediverse news and discussion.
Fediverse is a portmanteau of "federation" and "universe".
Getting started on Fediverse;
No, it can't be. I may be using robots.txt on, say, lemmy.ml, but those posts will still be broadcasted on lemmy.world, or hexbear.net.