No game suggestions, friend requests, surveys, or begging.
No Let's Plays, streams, highlight reels/montages, random videos or shorts.
No off-topic posts/comments, within reason.
Use the original source, no clickbait titles, no duplicates.
(Submissions should be from the original source if possible, unless from paywalled or non-english sources.
If the title is clickbait or lacks context you may lightly edit the title.)
Use SteamDB to check price histories. Steam Sales often present the lowest historical price on any game.
If you're okay with buying from key resellers, the stores on Isthereanydeal.com beat Steam a lot of the time.