Here you go. I usually email Max when I notice something missing from his list.

A List of Hacker News's Undocumented Features and Behaviors - https://news.ycombinator.com/item?id=33076053 - Oct 2022 (68 comments)

A List of Hacker News's Undocumented Features and Behaviors - https://news.ycombinator.com/item?id=30459276 - Feb 2022 (64 comments)

A List of Hacker News's Undocumented Features and Behaviors (2018-20) - https://news.ycombinator.com/item?id=26866482 - April 2021 (255 comments)

A List of Hacker News's Undocumented Features and Behaviors (2018) - https://news.ycombinator.com/item?id=23439437 - June 2020 (266 comments)

A List of Hacker News's Undocumented Features and Behaviors - https://news.ycombinator.com/item?id=20292361 - June 2019 (25 comments)

A List of Hacker News's Undocumented Features and Behaviors - https://news.ycombinator.com/item?id=19212822 - Feb 2019 (183 comments)

Hacker News's Undocumented Features and Behaviors - https://news.ycombinator.com/item?id=16437973 - Feb 2018 (391 comments)