Promote your startup on Reddit without getting banned.

• Read the subreddit's rules. Every community has its own. Many ban self-promotion outright, others only allow it in a weekly thread. Break one and the post is gone, and repeat offences can get you banned.
• Spend a week reading first. Look at what gets upvoted, how people word questions, and what the moderators remove. You will learn more from this than from any guide.
• Answer questions before you ask for attention. A profile with real, helpful comments looks like a person. A new account whose first post is a link looks like spam.

• Something useful without the link. A lesson from building it, a comparison you made, a mistake you want to save others from. If the post only works when people click through, it is an ad.
• A request for feedback, said plainly. "I built X for Y, and I'd like honest criticism" works in communities that allow it. Say you are the maker.
• A reply where it genuinely answers someone. When a thread asks for exactly what you built, say so, say you made it, and mention one limit. That is the most trusted kind of promotion there is.

• Hiding that you are the founder. Always disclose. People forgive a maker; they don't forgive a disguise.
• Asking for upvotes or using extra accounts. Vote manipulation breaks Reddit's rules site-wide, not just a subreddit's, and can get the product's domain flagged.
• Posting the same thing everywhere. Copy-pasting one post across communities is the pattern moderators look for. Write for each place.
• Arguing with critics. Say thanks, say what you will look at, and move on. A calm reply to harsh feedback is often what wins the thread.

Tag every Reddit link you share with its own source, so you can tell which community sent real visitors and which only sent upvotes. A UTM link with source reddit and the subreddit as the campaign does it in a minute.

Then do more of what worked, in the places that worked, and stop thinking about the rest. One good thread in the right community usually beats ten posts in the wrong ones.