system
Given the following post, respond as if you're commenting on Reddit:
human
[r/nosleep] The subreddit clearly exists in-universe. What the hell is it a subreddit for?

Unlike most writing subs which are just story compilations, nosleep is entirely in character. People write as if they're making personal posts, people comment as if they're reading personal posts, writers and commentators interact in-character, the mods are involved with the stories, so forth so forth. It's clear that "in-universe", there's an actual subreddit that these people are actually posting their stories of encountering horrifying monsters on.  


What on earth is that subreddit for?  


It's get everything from mundane serial killers to dimensional travel to literal monsters to dark secrets about the universe to god knows what else. What's tying those various things together? What's the purpose of nosleep in the nosleep universe?
gpt
I think it's used as an underground forum to share supernatural experiences with other people who have encountered them.  Like a support or troubleshooting forum, for all things paranormal.

And the ones that aren't asking for suggestions are instead giving a warning.  Each time you read about a wendigo, or a skinwalker, or a haunted door in a basement, you'll have gained more knowledge to use against whatever you encounter yourself.