Reddiquette
Reddiquette is the community’s informal etiquette, a blend of the sitewide norms Reddit has accumulated over the years and the specific rules each subreddit writes for itself. It is not a single enforced policy so much as the shared sense of how a good participant behaves, and it is the difference between being read as a member and being read as an outsider passing through.
What it covers
Most of reddiquette comes down to a handful of durable expectations. Contribute before you take, so your first action in a community is not a link to your own product. Read the sidebar and the pinned rules, because each subreddit has its own, and they are strongly enforced. Do not manipulate votes, whether by asking for upvotes or coordinating them. Disclose an affiliation when it is relevant, rather than recommending your own thing as if you were a neutral bystander. Do not spam links or paste the same message across many communities at once. And engage in good faith, treating people as people rather than as conversion targets.
None of this is exotic. It is the ordinary courtesy of a room where the regulars have been talking for years and can tell within a sentence whether you respect that.
Why operators should care
Following reddiquette is the practical difference between presence and removal. The subreddits decide who is welcome, and they decide it less on a single rule than on whether your overall behavior reads as contributing or extracting. An operator who skips the etiquette tends to get flagged not for one specific misstep but because the pattern looks self-serving, and once a community reads you that way, the standing is hard to recover.
The upside is that reddiquette is not a constraint to work around. It is a description of the behavior that actually earns a hearing on Reddit. The full version of that argument is in the guide on Reddit marketing for founders, and the credibility it builds shows up, over time, as Reddit karma.