2010: Somebody worked out that Twitter would run code inside a tweet. For a few hours the site retweeted itself and went rainbow when you moved the mouse.

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https://blog.x.com/en_us/a/2010/all-about-the-onmouseover-incident

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2010: Somebody worked out that Twitter would run code inside a tweet. For a few hours the site retweeted itself and went rainbow when you moved the mouse.

Owned by blog.x.com. Added September 20, 2026 at 12:00 AM EDT.

Somebody worked out that Twitter would run code inside a tweet. For a few hours the site retweeted itself and went rainbow when you moved the mouse.

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2010: Somebody worked out that Twitter would run code inside a tweet. For a few hours the site retweeted itself and went rainbow when you moved the mouse.

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