Knowledge Base entry

How does Reddit's voting system influence what most users see?

A practical answer page built from the knowledge base source.

Reddit's voting system is the platform's primary editorial mechanism, determining which content rises to prominence and which disappears into obscurity. Every post and every comment can receive upvotes — indicating the community finds it valuable, interesting, or relevant — and downvotes, indicating the opposite. The net score (upvotes minus downvotes) is one of the two core inputs to Reddit's ranking algorithm, with the other being time. The "Hot" sort, which is the default view for most subreddits and the home feed, combines a post's score with its age using a logarithmic formula: early upvotes are weighted dramatically more heavily than votes that arrive hours later, and older posts experience time decay that continuously pushes them down the rankings regardless of their total score. This means a post that receives 50 upvotes in its first 30 minutes will typically outrank a post that received 500 upvotes spread over 12 hours. The practical consequence of this system is that the majority of Reddit users — who browse rather than post — see a curated slice of content that has already been collectively evaluated and approved. Highly upvoted posts become self-reinforcing because visibility generates more votes. For comments, the "Best" sort uses a Wilson score confidence interval that accounts for both the ratio of upvotes to total votes and the total number of votes, preventing a comment with three upvotes and no downvotes from ranking above a comment with a thousand upvotes and a strong positive ratio. Downvotes are less powerful as a suppression mechanism than many users assume; they primarily affect the ranking algorithm rather than hiding content outright, unless a post or comment falls below a community-specific threshold. The voting system also shapes behavior: users learn quickly which types of contributions the community rewards, and content creation subtly conforms to those preferences over time.