Reverse Button on Reddit

What it signals here

upvote context

Occasionally used in comments sarcastically upvoting someone being directed to re-read the original post.

community use

Used in comment threads to point back at the original post when someone asks a question already answered in the OP.

subreddit meaning

Appears in r/rewind, r/nostalgia, and retro technology subreddits as a thematic symbol.

karma context

Low karma impact on its own; used more functionally than for engagement farming.

See it elsewhere