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Show HN: Hacker News em dash user leaderboard pre-ChatGPT

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358 points tkgally | 2 comments | 30 Aug 25 03:40 UTC | HN request time: 0.442s | source

The use of the em dash (—) now raises suspicions that a text might have been AI-generated. Inspired by a suggestion from dang [1], I created a leaderboard of HN users according to how many of their posts before November 30, 2022—that is, before the release of ChatGPT—contained em dashes. Dang himself comes in number 2—by a very slim margin.

Credit to Claude Code for showing me how to search the HN database through Google BigQuery and for writing the HTML for the leaderboard.

[1] https://news.ycombinator.com/item?id=45053933

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userbinator ◴[30 Aug 25 04:14 UTC] No.45071871[source]▶
I suspect they are generated via "autocorrect", the same way as "smart (more like stupid) quotes" and other characters that tend to cause a great deal of frustration should they find their way into source code. It would be interesting to see how many users regularly make posts containing non-ASCII characters.
replies(5): >>45071883 #>>45071891 #>>45071897 #>>45071898 #>>45072027 #
1. dang ◴[30 Aug 25 04:16 UTC] No.45071883[source]▶
I'm only #2 but all mine are guaranteed hand-made, done this way: https://news.ycombinator.com/item?id=45071823
replies(1): >>45072925 #
2. lostlogin ◴[30 Aug 25 08:24 UTC] No.45072925[source]▶
When the pre 2022 versus post 2022 stats come out, all will be revealed.