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Is the em dash a ChatGPT giveaway? What ten years of Reddit posts show

This story is from 2026-10-30. It is preserved in the archive; the latest stories are on the live feed.

I'm Dmytro, the founder of KissMyPost, and I spend my days counting things in Reddit data. The question I kept hearing was whether the em dash gives away ChatGPT, so I counted it. I checked every long post and comment in 100 large English-language subreddits. Here is what I found, and what the data…

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  1. 2026-10-30 13:02 · DEV Community — AI
    Is the em dash a ChatGPT giveaway? What ten years of Reddit posts show

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