Community guides › r/todayilearned

How to post in r/todayilearned

What this community allows, what its most upvoted posts have in common, and what gets removed. Checked against the community's sidebar.

Can I promote my app or project in r/todayilearned?

Not as a rule. No self-promotion here. Take part as a member instead, or pick another community.

Does r/todayilearned allow AI-written posts?

There's no explicit ban we could find, but readers spot generic AI writing quickly. Rewrite any draft in your own voice.

What format do posts in r/todayilearned need?

Title starts 'TIL that ...'. Link post to a reliable source. Body empty.

What do the top posts in r/todayilearned look like?

Top posts of the year: 0% have a text body; titles ~42 words, 0% questions, 72% with a number; common openers: 'TIL'; top comments ~31 words.

What do readers of r/todayilearned reward?

A surprising, specific, sourced fact with a number or a name in the title.

The rules we found

Sidebar: titles must begin "TIL"; link directly to a reliable source for every claim; no personal opinions or anecdotes; titles must stand alone; no "TIL about...", how-tos or word definitions.

What gets posts removed or ignored

• facts without a reliable source link
• opinions or personal stories
• broad 'TIL about' titles

Rules change. Read the community's own Rules tab before posting; this page is a summary, not the rules.