The user who invented the hashtag has reportedly left Twitter, saying the company 'deserved more dignity and consideration than it's received in the last six months'

Chris Messina, who suggested in 2007 that Twitter start using hashtags to group tweets, has said goodbye to the platform.
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Using hashtags on X? You don’t have to, confirms Elon Musk

We have been using Twitter, now X, for expressing ourselves for a couple of years now and ever since then we have been complimenting our thoughts with hashtags. It has now become a habit. But soon you ...