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How Mastodon made friends with Meta
(www.platformer.news)
This is a most excellent place for technology news and articles.
Reminds me of the time Facebook adopted another open protocol (XMPP), got lots of people using it, and then shut down their gateways to the open network.
That was Google. Facebook did use XMPP but never advertised it.
It was both of them. I didn't mention Google because this article is about Facebook/Meta.