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Threads is officially starting to test ActivityPub integration
(www.theverge.com)
This is a most excellent place for technology news and articles.
I'm getting an impression you're not using Mastodon. Vast majority of Mastodon users are there for a very specific reason, to decouple from corporate social networks, and won't switch, period.
My optimism is grounded on having reasons to believe Meta is implementing Activity Pub so that EU regulators will allow them to operate here depending on whether Meta plays nice.