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How to choose which subreddit to post in

SubMouse Editorial · Published Nov 6, 2026 · Last reviewed 2026-11-06

A checklist for matching your question or link to the right community: topic fit, format, rules, activity, and karma gates — before you hit submit.

Name the job of the post

Before you hunt communities, write one sentence: are you asking for advice, sharing a project, looking for critique, or starting a discussion? Communities reward different jobs. A troubleshooting question that thrives in a beginner room can fail in a link-news room even when both claim the same topic.

Checklist before you submit

CheckPass looks likeFail looks like
Topic fitRecent posts match your subjectName matches, posts do not
Format fitYour post type (text/link/image) appears oftenOnly images while you need long text — or reverse
RulesYou can obey title/flair/promo rulesKarma/age gates or promo bans you cannot meet yet
ActivityFresh posts with real commentsHuge subscribers, quiet New queue
ToneTop comments resemble how you writeCulture clash you are unwilling to adapt to

Work through these checks in order:

1. Topic fit — Would a regular of that community recognise your post as belonging there without a stretch? 2. Format fit — Text question, photo, link, or poll? Match the community’s usual posts (sort by Hot and New for two minutes). 3. Rules and flair — Read the short rule list and any required flair or title format before drafting. 4. Activity — Prefer a room with recent posts and replies over a silent giant that only looks large by subscribers. 5. Gates — Some communities hide posts from low-karma or new accounts (Reddit Help documents this as anti-spam). If you are new, start where newcomers are welcome. 6. Self-promo / homework / medical — Many communities ban or tightly limit these; one mis-aimed post burns goodwill.

When two candidates both look plausible — for example a general community and a beginner community — use Compare two subreddits. The comparison shows public descriptions, member counts, posts/day samples and short rule titles when we have them.

After you find one fit, fan out with how to find related subreddits or the related finder.

If posts keep getting removed

Removals are usually rules, automoderator filters, or karma/account-age gates — not a mysterious shadowban by default. Read the removal message, the sidebar rules, and any automod comment. Build a short history of on-topic comments in welcoming communities before trying high-traffic rooms again.

Official Reddit Help explains that some communities require karma before posting as an anti-spam measure, and points newcomers toward friendlier lists maintained by communities such as r/NewToReddit (unofficial).

Sources

  1. Reddit Help — What is karma? (karma requirements for posting) — Official note that some communities require karma before posts appear; points to newcomer-friendly lists.
  2. SubMouse compare tool — Side-by-side community comparison used in the checklist.
  3. SubMouse related subreddit tool — For neighbouring communities after you pick a fit.