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A better list of Mastodon servers that have pre-emptively defederated from Threads.net
(fedipact.veganism.social)
This is a most excellent place for technology news and articles.
Based mastodon.art, I don't use Mastodon anymore (microblogging isn't my thing) but I'm glad I set my account there when I tried it. I remember the folks there being quite the lively and caring bunch.
mastodon.art is the single worst mastodon instance ever. the admins trick users into signing up so they can hold as much defederation power possible. .art defederates nearly EVERYONE.