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r/MachineLearning rules, stats, and what to post

Know the rules before you post. So easy grandma can do it.

3.1M members
To post
No minimum in the rules
To comment
No minimum in the rules
Self-promotion
Allowed with conditions
Paid products are allowed if they offer value and the intent is to share resources or collect feedback for open dialogue.
Links
Allowed with conditions
arXiv links must include commentary or analysis to initiate discussion.
Promo risk
High
From the rules, not from removal counts
Community age
17 years
Since Jul 2009
A grandma in an orange sweater at an old beige computer, reading r/MachineLearning on Reddit. A Rankhog sticker and a Reddit sticker are on the computer.

About r/MachineLearning

A source-backed Rankhog guide to r/MachineLearning: public rules, community context, posting fit, and startup-promotion risk before you publish.Checked from the r/MachineLearning rules on Reddit.

r/MachineLearning rules

6 rules, in the community's own words.

  1. 1

    No Spam

    r/MachineLearning has held a long-standing, strict policy on spam. The posts deemed to be spam will be removed, and repeat offenders will be permanently banned from participating in the subreddit.

  2. 2

    No Self-Promotion

    r/MachineLearning does not permit the promotion of paid products, wherein the intent is clearly to promote a particular product. However, posts with links to paid products are acceptable, contingent on the fact that the post offers sufficient value to the community members and the intent is to share a resource or collect feedback for an open-dialogue. The decision will be made entirely at the discretion of the moderator team.

  3. 3

    No Marketing Campaigns (SEO)

    r/MachineLearning strictly prohibits strategic marketing campaigns targeted at community members, and posts intended to rank for SEO purposes. In the event that such behavior is caught, the user in violation of our policy will be perpetually banned with all past posts and comments purged entirely from the subreddit.

  4. 4

    No Disrespectful Behavior

    r/MachineLearning is an all-inclusive community for a wide range of users, and thereby, kind and respectful behavior is expected in all interactions that occur on the subreddit. Therefore, please be cordial and professional at all times, and be cognizant of the fact that the user base comprises beginners interested in ML and far more experienced, technical individuals with practical experience.

  5. 5

    No arXiv Links without Body Text

    r/MachineLearning is not a depository of bare arXiv links. Therefore, for users that share research papers, please insert some form of commentary or analysis to initiate a community-wide discussion. In other words, low-effort posts will be removed for research papers.

  6. 6

    No Low-Effort, Beginner Questions

    r/MachineLearning will expand its scope to allow more content oriented around beginners, for a broader audience to participate in the subreddit. However, there is a fine-line between a question posted by user who, evidently, put in the time to research ML concepts and effort to communicate the guidance needed from industry practitioners, and then those that post questions that can be easily found online. The latter type of post will be removed from the subreddit.

What to post in r/MachineLearning

What fits the room, and what gets removed.

Works well

  • A technical writeup of how you built something, covering the approach, the results, and the failures, ending with an open invitation for feedback.
  • A research paper share where you add your own commentary or analysis and pose a question to start a community-wide discussion.
  • A post collecting feedback on a paid product, framed as sharing a resource and opening a dialogue rather than promoting it.
  • A well-researched question that shows you did the reading and asks practitioners for specific guidance you could not find online.
  • A lessons-learned post about an ML project that gives the community something genuinely useful to react to.

Avoid

  • Dropping a bare arXiv link with no commentary or analysis, which breaks “No arXiv Links without Body Text”.
  • Posting a paid product with the clear intent to promote it, which breaks “No Self-Promotion”.
  • Running a coordinated marketing push or writing posts meant to rank in search engines, which breaks “No Marketing Campaigns (SEO)” and can get you banned with all past posts and comments purged.
  • Asking a beginner question that a quick online search would answer, which breaks “No Low-Effort, Beginner Questions”.
  • Spamming the subreddit, which breaks “No Spam” and gets repeat offenders permanently banned.
  • Being rude or dismissive to beginners or to experienced practitioners, which breaks “No Disrespectful Behavior”.

Best hours to post in r/MachineLearning

No pattern yet. r/MachineLearning does not have enough top posts from the last 90 days to name its best hours.

What r/MachineLearning Is For

This is a community for machine learning discussion, and the description makes the boundaries very clear. Beginners are pointed to /r/mlquestions or /r/learnmachinelearning, AGI talk goes to /r/singularity, career advice goes to /r/cscareerquestions, and datasets go to r/datasets. What stays here is substantive machine learning content for a mixed audience, and the rules say the user base includes beginners interested in ML as well as far more experienced, technical individuals with practical experience. Research papers are welcome, but only when the person sharing them adds commentary or analysis that starts a community-wide discussion. Questions are welcome too, but only from people who clearly put in time researching ML concepts and effort into communicating what guidance they need from industry practitioners.

Rules That Matter Before Posting

Five rules decide whether a marketing-adjacent post survives here. “No Spam” is the baseline, and repeat offenders get permanently banned. “No Self-Promotion” says paid products cannot be promoted outright, but a post with a link to a paid product is acceptable if it offers sufficient value to community members and the intent is to share a resource or collect feedback for an open dialogue, with the decision made entirely at the discretion of the moderator team. “No Marketing Campaigns (SEO)” is the harshest one: strategic marketing campaigns and posts intended to rank for SEO get a perpetual ban, and all past posts and comments are purged entirely from the subreddit. “No arXiv Links without Body Text” means any research paper you share needs commentary or analysis to start a discussion, or it gets removed as low effort. “No Low-Effort, Beginner Questions” sends easily-searched questions elsewhere, and “No Disrespectful Behavior” reminds you the room holds both beginners and deeply experienced technical people.

What To Post

A good post here leads with substance and invites discussion. If you built something, write about the technical work: the problem, the approach, what worked, what did not, and then invite feedback in an open dialogue. If you link a paid product, make sure the post offers sufficient value to community members and reads as sharing a resource or collecting feedback, not as an ad, and remember the moderator team decides this entirely at their discretion. If you share a research paper, add your own commentary or analysis so the community has something to discuss. If you ask a question, show you researched it first and be specific about the guidance you need from practitioners. Keep the tone cordial and professional, because you are writing for both beginners and experienced technical people.

What To Avoid

Do not drop a bare arXiv link with nothing around it, because that is an explicit removal reason. Do not post a paid product with the intent to promote it, because that breaks the self-promotion rule even if the link itself is technically allowed. Do not run a marketing campaign or write posts meant to rank for SEO, because the penalty is a perpetual ban plus the purge of everything you have ever posted here. Do not ask a question you could have answered with a quick search, and do not be rude to beginners or to experts, since the rules expect cordial and professional behavior from everyone.

A note from Anthony

The purge rule is the one that stops me cold here. If you run an SEO-style campaign and get caught, every past post and comment you made in this subreddit gets wiped, so one bad move erases years of good standing. I also like that the self-promotion rule is written as a real trade: you can link a paid product, but only if the post genuinely helps people and invites open discussion. That is exactly how I think about respectful Reddit marketing, and this community just says it out loud.

By , founder and operator of Rankhog. Every guide is built from the community's own public rules and data, then checked by Rankhog's grounding audit before it goes live.

Common questions about r/MachineLearning

What subreddits are similar to r/MachineLearning?

Subreddits like r/MachineLearning are r/ChatGPT, r/singularity, r/OpenAI, r/ArtificialInteligence, r/artificial, r/ClaudeAI, r/LocalLLaMA and r/learnmachinelearning.

Can I post about my paid product here?

Only conditionally. The rules allow links to paid products when the post offers real value to the community and the intent is to share a resource or collect feedback for an open dialogue, and the moderator team makes that call entirely at their discretion.

Can I share a research paper I worked on?

Yes, but only with commentary or analysis added. The rules say bare arXiv links are removed as low-effort, so write something that starts a community-wide discussion.

Can I ask a basic question about machine learning?

No. The rules send beginner questions to /r/mlquestions or /r/learnmachinelearning, and the description points career advice to /r/cscareerquestions and dataset requests to r/datasets.

What happens if I get caught spamming?

The rules say repeat spammers are permanently banned, and marketing campaigns or SEO posts get a perpetual ban with all past posts and comments purged from the subreddit.

Does this community allow AI-generated content?

The rules do not mention AI-generated content, so treat that as unknown and lean on the value and discussion standards that the written rules do require.

Subreddits like r/MachineLearning

Other rooms for the same crowd.

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