Green Book on Reddit

What it signals here

upvote context

Comments with thorough reading recommendations in discussion threads often receive this as a reaction.

community use

Used in r/books, r/fantasy, r/literature, and study-focused subreddits.

subreddit meaning

Shorthand for 'book recommendation included' or 'reading material attached' in posts.

karma context

High-karma posts in book subreddits frequently feature this emoji in titles for visual pop.

See it elsewhere