Card Index on Reddit

What it signals here

upvote context

Gets upvoted on posts where someone presents an impressively well-documented compilation of information.

community use

Used in communities like r/organization, r/notebooks, r/LifeProTips, or r/datahoarder.

subreddit meaning

In legal or evidence-based subreddits, it implies a thorough documentation approach — 'document everything 📇'.

karma context

High karma posts in research or journalism subreddits may use it to signal extensive sourcing.

See it elsewhere