Why do some comments say that they are hidden?

Usually, that only happens when a comment has dislikes or something akin to that. But it just seems random here.

This page is a permanent link to the reply below and its nested replies. See all post replies »

duckduckbooze · 46-50, F

It used to be because someone said something naughty, I'm not sure these days.

Bri89 · 31-35, M

@duckduckbooze Well, that wasn't the case. I had to unhide someone's comment and there was nothing naughty about it. It seems random.

duckduckbooze · 46-50, F

@Bri89 Exactly, [b] I'm not sure these days[/b], because now it's not because of something naughty.

Fluffybull · F

@Bri89 I've noticed that as well.