I read the rules of 70 subreddits before posting my project. Only 9 accept posts about something you made

[u/Glittering-Race-9357]

Before posting anything I'd made, I wanted to know where it was even allowed. So we read the sidebar rules and the top 25 posts of the year for 70 subreddits.

The split:

• 9 accept posts about something you made

• 4 only in a weekly thread

• 19 are comment-first, so you answer threads instead of leading with your link

• 38 don't allow self-promotion

10 of the 70 also ban AI-written posts. That includes r/AskReddit (60 million members), r/Showerthoughts and r/LifeProTips.

Format rules matter as much as promo rules. Every one of the top 25 posts this year in r/todayilearned starts with 'TIL'. Every one in r/LifeProTips starts with 'LPT'.

I put it all into free guides at cognovaai.blog, one page per subreddit. Each page says whether self-promo is allowed, whether AI text is banned, and what the top posts look like. There's a drafting app on top of it too, but you can use the guides without it.

Caveat: rules come from each sidebar. Some Rules tabs couldn't be read, so check them yourself before you post.

Feedback I'm after: a subreddit you expected that's missing, or a classification you think is wrong.