Multiply on Reddit

What it signals here

upvote context

Used in comments to pre-emptively downvote an argument or signal the comment deserves a ratio

community use

Common in debate subreddits or fact-check threads to mark a claim as false or rejected

subreddit meaning

In r/AmITheAsshole or similar subs, used to signal a clear 'you are wrong' verdict

karma context

Ironically used on posts about karma farming — stamping the emoji signals knowing disbelief

See it elsewhere