Personally the first HN algorithm anecdote I really noticed was when the "stop destroying videogames' petition hit the front page a couple years ago. In the first hour it got a modest ~100 votes and comments with some organic discussion, so pretty typical for a good HN post. In the next hour it was dead and buried several hundred posts down.
I don't want to be a tinfoil hatter here, but I think certain industries have a lot more influence over this site than most people realize.
I don't want to be a tinfoil hatter here, but I think certain industries have a lot more influence over this site than most people realize.