every subreddit has different unwritten rules and here's how to decode them before posting

hey indie hackers

spent the last month doing something borderline obsessive

joined 50+ subreddits

lurked in each one for days

analyzed top posts, removed posts, banned users

trying to understand the unwritten rules

because here's the thing:

every subreddit's sidebar says basically the same thing

"be respectful"

"no spam"

"follow reddiquette"

but the ACTUAL rules?

the ones that determine if your post succeeds or gets removed?

those are invisible

and different in every single subreddit

the problem with subreddit rules

what the rules say:

r/Entrepreneur sidebar: "no excessive self-promotion"

what that actually means:

depends entirely on:

• who's moderating that day

• what mood they're in

• what other posts were submitted recently

• how the community responds

• your account history

• time of day you posted

i've seen identical posts:

one gets 200 upvotes

one gets removed for "self-promotion"

posted 2 hours apart

the culture shock between subreddits

here's a real example:

wrote a post about "launching my productivity tool"

posted it in 5 different subreddits

same exact content

r/SideProject:

142 upvotes, 23 helpful comments

"great work! here's some feedback..."

r/Entrepreneur:

removed within 3 hours

"rule 2: no direct promotion"

r/SaaS:

47 upvotes but locked by mods

"moving to feedback friday thread"

r/startups:

shadowbanned my account

didn't even get to see if it was removed

r/IMadeThis:

became top post of the day

"this is exactly what this sub is for!"

same post. five completely different outcomes.

what i discovered by analyzing 50 subreddits

created a spreadsheet tracking:

• stated rules vs actual enforcement

• what gets upvoted vs removed

• mod behavior patterns

• community tolerance levels

• posting time impact

• title formats that work

• content structures that succeed

here's what i found:

pattern 1: self-promotion tolerance scale

every subreddit falls somewhere on this scale:

zero tolerance (instant removal):

• r/startups

• r/technology

• r/programming

• r/BusinessIntelligence

you mention your product at all = removed

even if it's relevant to the discussion

even if people ask about it

structured tolerance (specific days/threads only):

• r/Entrepreneur (self-promotion saturday)

• r/SaaS (feedback friday)

• r/webdev (showoff saturday)

• r/marketing (promotion thread)

outside these windows = removed

contextual tolerance (depends on how you frame it):

• r/growmybusiness

• r/smallbusiness

• r/digitalnomad

• r/ecommerce

if you lead with value = okay

if you lead with product = removed

high tolerance (designed for sharing):

• r/SideProject

• r/IMadeThis

• r/AlphaandBetausers

• r/roastmystartup

literally made for sharing your work

but still has limits on pure advertising

pattern 2: the "value ratio" expectation

discovered that successful posts follow different value ratios:

r/Entrepreneur expects:

90% educational content

10% or less about your product

example of what works:

"here's how i got 1000 customers in 3 months [detailed framework]. built a tool to automate part of this process if anyone's interested."

r/SaaS expects:

70% product details

30% learning/insights

example:

"built a CRM for solopreneurs. here's why existing CRMs fail for solo founders [insights]. here's how we solved it [product details]."

r/SideProject expects:

50% what you built

50% tech stack / how you built it

example:

"built a habit tracker with React and Supabase [screenshots]. here's the architecture and why i chose these tools [technical details]."

pattern 3: title format preferences

each subreddit has invisible title format preferences:

r/Entrepreneur loves:

• "how I [achieved result]"

• "[number] lessons from [experience]"

• "why [common belief] is wrong"

dislikes:

• "check out my [product]"

• questions in titles

• clickbait without substance

r/SaaS loves:

• "[product type] for [niche audience]"

• "built [solution] to solve [specific problem]"

• "[month] update: [product name]"

dislikes:

• vague product descriptions

• no problem statement

• "another [generic product]"

r/startups loves:

• case studies with numbers

• failure stories with lessons

• strategic discussions

dislikes:

• anything that looks like promotion

• "i built" posts

• asking for users/feedback

pattern 4: community tone differences

the WAY you write matters as much as what you write:

r/Entrepreneur tone:

motivational but practical

"here's what worked for me"

confident without being arrogant

wrong tone: academic, overly formal

r/SaaS tone:

technical and specific

numbers and metrics expected

less storytelling, more data

wrong tone: vague, emotional, no metrics

r/startups tone:

strategic and analytical

VC/investor perspective common

high-level thinking valued

wrong tone: tactical how-tos, beginner questions

r/SideProject tone:

maker-focused and supportive

tech stack details appreciated

"fellow builder" vibe

wrong tone: corporate, sales-y

the deep research i did on each major subreddit

here's my analysis of the top 10 subreddits founders care about:

r/Entrepreneur (1.2M members)

stated rules:

no excessive self-promotion

actual enforcement:

• self-promotion allowed saturdays only

• even on saturdays, must provide context

• weekday posts must be 90%+ educational

• mods very active, quick removals

• community downvotes obvious promotion

what works:

• detailed case studies with numbers

• "how i" posts with frameworks

• failure stories with lessons

• asking strategic questions

what gets removed:

• "i built [thing], feedback?"

• links without context

• repeat promotion same product

• low-effort surveys

best posting time:

8-10am EST weekdays for educational

saturday morning for self-promotion

average karma needed:

50+ karma, 30 day old account

r/SaaS (85k members)

stated rules:

feedback friday for promotion

actual enforcement:

• strictly enforces feedback friday rule

• BUT allows product posts if framed as case study

• wants to see metrics and traction

• technical details expected

• mods move posts to friday thread

what works:

• "[month] in review: [metrics]"

• "how we got our first 100 customers"

• technical deep dives

• pricing/positioning discussions

what gets removed:

• "launching my SaaS" posts monday-thursday

• vague product descriptions

• no metrics or traction shown

• asking for feedback without context

best posting time:

friday morning for promotion

tuesday-thursday for case studies

average karma needed:

100+ karma, 7 day account

r/startups (1.5M members)

stated rules:

no self-promotion

actual enforcement:

• ZERO tolerance for promotion

• even indirect mention gets removed

• can discuss your startup if relevant to larger point

• must be strategic discussion

• very strict moderation

what works:

• strategic questions about scaling

• fundraising experiences (no links)

• hiring/team building discussions

• market analysis

what gets removed:

• anything that mentions your product prominently

• "i built" posts

• asking for users/customers

• surveys

best posting time:

weekday mornings for serious discussion

average karma needed:

500+ karma minimum

r/SideProject (200k members)

stated rules:

show off your side projects

actual enforcement:

• very lenient on self-promotion

• wants to see what you built

• appreciates tech stack details

• community is supportive

• still removes pure ads

what works:

• "built [thing] with [tech stack]"

• screenshots and demos

• journey stories

• technical challenges solved

what gets removed:

• no screenshots/demo

• pure "check out my startup" with link

• corporate/marketing tone

• asking for money

best posting time:

weekend mornings

average karma needed:

10+ karma

r/IMadeThis (380k members)

stated rules:

share things you made

actual enforcement:

• most lenient of all

• designed for showing off

• community wants to see your work

• self-promotion expected and welcomed

• still wants authentic presentation

what works:

• visual posts (images/videos)

• "i made [thing]" with demo

• behind-the-scenes process

• hobby projects to serious products

what gets removed:

• things you didn't actually make

• pure advertisements

• dropshipping/reselling

best posting time:

any time, very active

average karma needed:

0, very beginner friendly

r/growmybusiness (25k members)

stated rules:

help each other grow

actual enforcement:

• context-dependent moderation

• helpful posts mentioning product = okay

• pure promotion = removed

• smaller community, more personal

• mods less active

what works:

• growth tactics that worked

• specific channels/strategies

• problems you're facing

• asking for specific advice

what gets removed:

• generic promotion

• low-effort posts

• spam

best posting time:

weekday afternoons

average karma needed:

15+ karma

r/smallbusiness (820k members)

stated rules:

no promotion outside promo thread

actual enforcement:

• has weekly promote your business thread

• outside that, must be discussion-focused

• community reports promotion heavily

• mods responsive to reports

what works:

• asking for advice on specific challenges

• sharing lessons from running business

• local business focused content

• practical how-tos

what gets removed:

• promote my business outside thread

• surveys without permission

• generic success stories with links

best posting time:

weekday business hours

average karma needed:

25+ karma

r/marketing (1M members)

stated rules:

no self-promotion

actual enforcement:

• wants strategic marketing discussion

• case studies okay if educational

• must provide real insights

• community is skeptical of tools

• high bar for quality

what works:

• campaign breakdowns with data

• channel-specific deep dives

• "tested X approaches, here's what worked"

• industry trend analysis

what gets removed:

• "we built marketing tool"

• surface-level advice

• generic tips

• obvious promotion

best posting time:

weekday mornings

average karma needed:

100+ karma

the patterns i found across all of them

universal pattern 1: images matter

posts with images get 3x more engagement

even in text-heavy subreddits

universal pattern 2: numbers are credibility

"got 100 customers" > "got customers"

specificity = trust

universal pattern 3: first hour determines success

if you don't get 5+ upvotes in first hour

post is basically dead

algorithm buries it

universal pattern 4: comment engagement extends life

respond to every comment quickly

keeps post active

algorithm shows it to more people

universal pattern 5: timing is real

weekday mornings (8-11am EST) perform best

weekends are dead in business subreddits

active in hobby/project subreddits

how to decode a subreddit before posting

here's my process:

step 1: lurk for 7 days minimum

don't post immediately

just read and observe

what to look for:

• which posts get upvoted vs removed

• community tone in comments

• mod activity level

• posting patterns

step 2: analyze top posts from past month

sort by top this month

read the top 20 posts

ask yourself:

• what format do they use?

• how long are they?

• do they mention products?

• what's the tone?

• how much detail included?

step 3: check removed/deleted posts

use reveddit.com or unddit

see what gets removed in that subreddit

look for:

• common removal reasons

• patterns in removed content

• where the line is

step 4: read mod comments

mods explain why they remove things

these comments reveal actual rules

example:

mod comment: "removed - feedback requests go in friday thread"

now you know the real rule

step 5: test with low-stakes post

ask a genuine question

share something helpful (not yours)

see how community responds

builds karma and understanding

what i built to solve this

tracking all these rules manually is brutal

so i built features into redchecker:

feature 1: subreddit culture analyzer

analyzes any subreddit's:

• promotion tolerance level

• preferred title formats

• best posting times

• content structure patterns

• mod activity patterns

feature 2: content fit scorer

paste your post

select target subreddit

get score on how well it fits that community

feature 3: multi-subreddit planner

planning to post in multiple subreddits?

shows you how to adapt content for each one

feature 4: removal risk detector

scans your post against that subreddit's patterns

predicts likelihood of removal

suggests changes to reduce risk

mistakes i see constantly

mistake 1: posting same content everywhere

wrote one post

posted in 10 subreddits

8 got removed

each subreddit needs adapted content

mistake 2: not reading room before entering

first time in subreddit = immediately post

community can tell you're new

gets suspicious/negative reception

mistake 3: ignoring subreddit size

approach that works in 20k member sub

fails in 1M member sub

scale changes dynamics

mistake 4: fighting with mods

post gets removed

argue with mod

get banned

mods have final say, accept it

the adaptation strategy

when i want to post in multiple subreddits now:

step 1: write core content

the main insights/story

step 2: create subreddit-specific versions

for r/Entrepreneur:

lead with lessons learned

bury product mention

add motivational framing

for r/SaaS:

lead with metrics

highlight product details

technical specifics

for r/SideProject:

lead with what you built

tech stack details

maker journey

step 3: different titles for each

not copy-paste titles

adapt to each subreddit's preferences

step 4: time them differently

don't post all at once

spread over days/weeks

real example of adaptation

core content:

built a reddit tool, learned about reddit marketing

r/Entrepreneur version:

title: "17 shadowbans taught me these 7 reddit marketing rules"

focus: lessons learned, framework

product mention: footnote at end

r/SaaS version:

title: "Built RedChecker: Reddit compliance tool (tech stack + first customers)"

focus: product details, metrics, tech

educational content: supporting context

r/SideProject version:

title: "Made a Chrome extension that checks Reddit posts before you submit (React + Node)"

focus: what i built, how i built it

why: personal need, solved own problem

questions for you

1. which subreddits do you want to post in?

curious where indie hackers are targeting

2. have you been confused by different rules?

posted same thing, different outcomes?

3. do you adapt content per subreddit?

or post same thing everywhere?

try this

pick one subreddit you want to post in

spend this week just lurking

analyze top 20 posts from this month

decode the actual rules

then write specifically for that community

if you want help analyzing subreddits:

redchecker.io has the culture analyzer

shows you each subreddit's real rules

lifetime deal: $59 (ending soon)

monthly: code "IN26" for 50% off

final thought

subreddit rules are like cultures

you can't just read about them

you have to observe and experience them

what works in one completely fails in another

there's no universal reddit strategy

only subreddit-specific strategies

learn the culture

adapt your approach

respect the community

that's how you succeed

-musha