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Bluesky posts are finally open to the public
(www.theverge.com)
This is a most excellent place for technology news and articles.
They built their own federated protocol and it's a microblog
it isn't very federal at the moment
If AT protocol goes public, other software might federate with existing Bluesky servers. Bluesky servers should have a set of filters that would keep safe for everyone joining the chosen server.