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Twitter is now X as the little blue bird disappears
(www.theverge.com)
This is a most excellent place for technology news and articles.
But it goes back much further than that. Musk wanted to rebrand PayPal X before they ousted him as CEO more than 20 years ago. He is so proud that he bought this domain in the 90s that he just keeps trying to make it a thing despite the inherent ambiguity.