Reddit crosspost

A Reddit crosspost shares an existing post into a second subreddit while preserving a visible link back to the original thread and its author. The crossposted version is labeled as coming from the source community, so readers can click through to the original discussion. That attribution is what separates a crosspost from a repost, which is a fresh copy of the same content submitted as if it were new, with no connection to where it first appeared. Crossposting is a built-in feature, reachable from a post’s share options.

How communities treat it

There is no single sitewide rule, only what each subreddit decides for itself. Some communities welcome crossposts as a way to surface relevant material from elsewhere on Reddit. Many restrict them, and a fair number prohibit them entirely, either because they want original submissions or because crossposted threads tend to bring along an audience with different norms. Moderators can also block their community’s posts from being crossposted out. The dependable habit is the one that applies everywhere on the site: read the target subreddit’s rules before sharing anything into it.

For operators

Crossposting is also where a familiar failure mode lives. Pushing the same promotional post into a long list of subreddits in quick succession is the canonical spam pattern, and it is among the easiest behaviors for Reddit’s machinery to recognize. AutoModerator configurations and the sitewide spam filters are tuned for precisely this shape of activity, and accounts that produce it tend to lose visibility quickly.

The alternative is one community, one context. A post written for the specific audience of a single subreddit, in its own vocabulary and on its own terms, looks nothing like blast distribution because it is nothing like it. That principle is part of the broader etiquette collected under reddiquette, and the working method behind it is covered in Reddit marketing for founders.