90/10
The ratio mods still judge you by
3 layers
Sitewide policy, automod, human mods
50 comments
What a mod skims before deciding
The 90/10 rule, and where it came from
The guideline is simple: if more than one in ten of your contributions is about your own project, you are a spammer. It originated in Reddit's old self-promotion help page and in reddiquette, where the advice was that self-promotion should be a side effect of participating rather than the reason you are there.
Reddit later retired that page and folded the idea into a broader policy against spam and manipulation. Two things follow from that, and most people get both wrong.
- Nothing counts the ratio for you. There is no counter, no warning at 11 percent, no sitewide enforcement of a specific number.
- Moderators kept it anyway. It survives because it matches what a mod sees when they open your profile. Nine useful comments and one product mention reads as a member. Ten posts about your tool reads as a campaign, regardless of quality.
Treat it as a floor, not a target. The people who never have problems are not running at exactly ten percent. They participate constantly and mention their product occasionally, when it is genuinely the answer.
Subreddit rules are the rulebook that binds you
Sitewide policy is the floor. Each subreddit sets its own rules on top, and those are the ones that get you removed. Two communities of identical size in the same industry can have opposite policies, one running a weekly showcase thread and the other banning any account that has ever linked to a commercial domain.
Where to find them
- The sidebar or About page. On mobile, tap the subreddit name, then See more. Rules are numbered and short.
- The community wiki. Larger subreddits keep the detailed version here, including exactly what counts as promotion.
- Pinned posts. Promo threads, read this first posts, and recent mod announcements about spam waves.
- The removal reasons on other posts. Sort by new and look for posts marked removed. This tells you what is enforced in practice, which is not always what is written.
How to read them in sixty seconds
Scan for four words: promotion, self, link, and blog. Then check whether a promo thread exists and when it runs. If the rules mention karma or account age, you are dealing with an automated gate, and getting karma on Reddit is the prerequisite before anything else you plan will work.
Common rule patterns and what they mean
The wording varies endlessly, the underlying patterns do not. If you can recognize these seven, you can read any subreddit's rules quickly.
| Pattern | How it is worded | What it really means | What to do |
|---|---|---|---|
| Karma minimum | You need 50 comment karma to post here | New accounts are filtered automatically | Comment for a week first, no links |
| Account age minimum | Accounts under 30 days cannot submit | Automoderator removes on sight, often silently | Wait it out, participate meanwhile |
| No links in your first post | Text posts only for new members | Link posts are the main spam vector | Write the post, put context in the body |
| Weekly promo thread | Self-promo goes in the Saturday thread | Promotion is allowed but quarantined | Set a reminder, post there, stay for replies |
| Ratio rules | Max one self-promo post per ten contributions | Mods check history manually | Be a regular before you promote |
| Domain blocklist | Nothing in the rules, posts vanish anyway | Your domain was flagged by an earlier spam wave | Ask modmail directly, do not repost |
| Flair or disclosure required | Tag commercial posts with the Promo flair | Transparency is the price of access | Flair it and say plainly that it is yours |
One warning about this table and every other list like it. Subreddit rules change without notice, usually right after a spam wave, and a community that welcomed product posts last quarter may ban them today. Read the sidebar on the day you post. Nothing you read here or anywhere else substitutes for that.
Post types that get removed most often
- The launch announcement. A link to your product with a paragraph of positioning copy. Removed almost everywhere outside dedicated showcase subreddits.
- The fake question. Asking what tool people use for X when you sell X. Experienced communities spot this instantly and it damages trust more than a straightforward post would.
- The blog post drop. A link to your content marketing with no commentary. Many subreddits blocklist domains that show up this way.
- The survey request. Asking a community to fill in your form. Almost universally banned because it takes and gives nothing.
- The recommendation comment that names only you. Answering a tool question with a single product, your own, and no disclosure.
How moderators actually detect promotion
There is no mystery here, and understanding it removes the temptation to be clever. Detection happens in three passes.
- Automoderator, instantly. Rules written in configuration text: karma below a threshold, account younger than N days, a domain on the blocklist, certain phrases in the title. Removal is silent in many subreddits, which is why your post can vanish with no message at all.
- User reports, within minutes. Regulars in small subreddits are better at spotting promotion than any filter, and a report puts you in the mod queue with a reason attached.
- A human clicking your username. The decisive step. A mod reads your recent comments looking for one thing: does the same domain, product name, or pitch keep appearing. If it does, the decision takes seconds, and it usually applies to everything you have posted there.
This is why account hygiene beats tactics. A profile with six months of useful comments across several subreddits survives scrutiny. A profile created three weeks ago whose every comment mentions the same tool does not, no matter how well written each comment is.
What a good promotional comment looks like
Same thread, same product, two outcomes. The difference is whether the comment stands on its own if you delete the mention.
Gets removed
"Check out Peeklens, it does exactly this. Link in my bio, happy to give you a discount code."
Contributes nothing to the thread, adds an incentive, and reads as an ad because it is one. Remove the product and there is no comment left.
Stays up
"The trap with keyword alerts is phrasing. Tracking your brand name misses most of it, since people describe the problem rather than name a tool. Track the complaint phrasing instead, and check threads within an hour or nobody sees the reply. Full disclosure, I build Peeklens which does this, but F5Bot is free and covers the basics."
Answers the question first, discloses the conflict, names a competitor. Still useful with the mention deleted.
Three habits carry most of the weight: answer in full before mentioning anything, disclose ownership in plain words, and name an alternative when one exists. Mods rarely remove a comment that does all three, because removing it would make the thread worse.
How to ask moderators for permission
Underused, and it works. Moderators spend their day removing things, so a message asking before posting stands out. Send modmail to the subreddit, not a direct message to an individual mod, and keep it to five sentences.
Modmail template
Hi, I have been commenting here for a couple of months under this account. I built a tool for [specific problem this community discusses] and I would like to share it, but I do not want to break rule 4. Would a text post explaining how it works be acceptable, or should it go in the weekly thread? Happy to do neither if it is not a fit.
Three outcomes: yes with conditions, which is common. Use the promo thread, which is fine. Or no, which saves you a ban. Any of those beats guessing. If you get no reply after a week, treat it as a no.
What happens when you get banned
There are two separate things people call a ban, and the difference matters a great deal.
- A subreddit ban is issued by volunteer mods and applies to that community only. It may be temporary or permanent, and it arrives as a message that usually names the rule. You can appeal it through modmail to that subreddit.
- A sitewide suspension comes from Reddit admins for policy violations such as vote manipulation, spam at scale, or ban evasion. It affects the whole account and is appealed through Reddit's own appeal process, not through mods.
A subreddit ban appeal that works is short: acknowledge the specific rule, say what you will do differently, ask to be let back in, and stop there. Arguing, quoting other users who broke the same rule, or messaging repeatedly turns a temporary ban permanent. If the ban message says mute, do not reply until the mute expires.
Never make a second account to get around a ban. Ban evasion is detected across accounts and is one of the few behaviors that reliably escalates a single subreddit problem into a sitewide suspension. Losing one community is recoverable. Losing the account is not.
The rule behind all the rules
Every workable promotion policy on Reddit is a proxy for one question: would this community be worse off if your comment disappeared. Answer that honestly before you post and you will pass almost every rulebook, including ones you did not read. Answer it dishonestly and no amount of karma, disclosure or careful wording will save the account for long.
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