So I was looking to hacker news today when I noticed something. Of all the threads in first page, one of them (beeper mini is back - https://blog.beeper.com/p/beeper-mini-is-back ) disappeared from the main page when I logged in.
I tried multiple times, and the result didn't change: as logged out the post is in front page, top 10, as logged in the post is not listed, at least not in the first few pages.
I don't remember seeing this pattern before, what would be the idea behind it?