TIL (Today I Learned)
Definition
A Reddit post format, popularized by r/todayilearned, where a user shares a surprising, counterintuitive, or noteworthy fact they recently discovered. Widely used as a content convention across many subreddits.
Context
r/todayilearned has over 40 million subscribers. TIL as a format has spread far beyond that community and is commonly used in professional and niche communities as a humble, accessible way to share knowledge. The framing implies learning rather than lecturing, which tends to be received more positively than declarative expertise claims.
Relevance to Reddit
TIL is a useful format for brands sharing genuinely interesting category or industry facts in a way that feels native to Reddit culture. The format only works when the fact stands on its own merit — using TIL to funnel toward a product conclusion collapses its credibility.
