Hacker News Marketing: The Reach Is in the Comments

Almost every guide to Hacker News marketing is really a guide to launch day. Pick a Tuesday, write a neutral Show HN title, have your founder comment ready, pray. That advice is fine. It's also about one day. Meanwhile, the comment sections on HN run every single day, and for a small product they're the part that actually sends people to your site.

I run Social Cue, which hunts Reddit, Hacker News and X for conversations worth joining, so I spend a lot of time looking at where the reach on HN really comes from. Short version: it comes from showing up in the right thread with something real to say. Here's how to do that without getting flagged into oblivion.

Why Hacker News marketing is a comments game

A Show HN is a lottery ticket. Even a good one can land on the new page at the wrong hour and vanish, and Syften's HN guide is honest that you should expect many submissions to fail.

Comments are different. You can leave one every day, on someone else's thread that already has the votes. When a thread is on the front page, a comment near the top of it is read by thousands of people, and it cost you twenty minutes.

The clearest example I know is Simple Analytics. In the story of how Adriaan and Iron bootstrapped it, one of the three growth tactics was simply finding posts in their domain, offering useful advice in the comments, and linking the product where it fit. One stretch of that sent 590 HN readers to the site. Not a launch. Comments.

There's also a timing mechanic worth understanding. HN's ranking divides points by a power of the time since submission, and the FAQ says comments in threads are ranked the same way. So an early, upvoted comment on a rising thread sits at the top for the whole ride, while a great comment left eight hours later gets buried under a "load more". Threads also close to new comments after two weeks. The window is short, and it's front-loaded.

The three kinds of threads worth your time

A story about a Rust compiler bug has no room for your invoicing app, and forcing it in is how you earn a flag. There are three thread types where a founder belongs.

1. Ask HN recommendation threads

These are the gold. Someone asks for tools, the thread gets hundreds of comments, and the people who build those tools show up and say so. "Ask HN: Alternatives to GitHub" pulled 649 points and 437 comments in the second half of August 2026, and inside it you'll find founders of competing forges commenting with an opening like "Founder/CEO here" and then actually explaining their trade-offs. Nobody flagged them. They were on topic, they disclosed, and they were useful.

2. The monthly "What are you working on?" thread

Every month there's an "Ask HN: What are you working on?" thread. The August 2026 edition hit 325 points and over 1,200 comments. Top-level comments are builders describing their projects, so a two-paragraph description of yours, with what you learned, is exactly what the thread is for.

3. News in your category

When a story breaks in your space, the thread under it is full of people with the exact problem you solve, in a bad mood about it. Simple Analytics built a little bot that pinged the founders whenever Google Analytics and privacy hit the news, then wrote and commented while the thread was hot. Watch for outages, pricing changes and policy shifts at the incumbents in your category. Those threads are where "we ended up building X because of this" is a welcome comment, not an ad.

How to write an HN comment that doesn't get flagged

The HN guidelines are short, and the relevant line is this: "Please don't use HN primarily for promotion. It's ok to post your own stuff part of the time, but the primary use of the site should be for curiosity." Read that as a ratio, not a ban. If your account is 90% real conversation, the 10% where you mention your product is fine.

Here's what a comment that survives looks like:

• Answer the question first. If someone asks about GitHub alternatives, your first two sentences are about the alternatives, including the ones you don't sell.
• Disclose in the first line. "Founder here" or "I work on X, so weight this accordingly" is the HN convention. It buys you more credibility than it costs.
• Pass the deletion test. Delete your product name from the comment. Is it still worth reading? If not, it's an ad, and HN readers can smell one from the new page.
• Be kind, converse curiously. Those are the guidelines' words. Shallow dismissals of other people's work are the fastest way to get downvoted, and the guidelines say a good critical comment should teach someone something.
• Write it yourself, in your own words. HN is unusually good at spotting pasted, polished, AI-sounding replies, and the mood towards them is not friendly. A draft can save you time. It can't replace your own voice.

One more mechanical note. Downvote and flag links only appear once an account crosses a karma threshold, so a brand-new account is a spectator with a comment box. Karma comes from useful comments, which is convenient, because that's the whole strategy anyway.

Finding the threads before they go cold

Given the ranking decay, the real skill is spotting the thread early:

1. Search HN by date. hn.algolia.com lets you search stories and comments and sort by date. The same Algolia API is free and public, with tag filters like ask_hn and show_hn, so a ten-line script can watch for keywords.
2. Keep a keyword list. Syften's advice is the right list: your product category, competitor names, the problem phrases your customers use, and adjacent technologies. "Alternatives to" plus a competitor name is the highest-intent query on the whole site.
3. Check at the right hour. There's no magic time, but US mornings, roughly 9am to noon Eastern, are when the technical audience is awake and threads are being born.

The catch is that HN is a rabbit hole. You go in to find one recommendation thread and surface forty minutes later having read a deep dive on Roman concrete. That's the real cost of this channel, and it's why most founders do it for three weeks and quit.

Where Social Cue fits

This is the part I built Social Cue for. Add hackernews to its platform list and each discovery run drives a dedicated Chrome window through the front page, Ask HN, Show HN, the new page and an Algolia keyword search, in your own logged-in browser. It scores every thread for relevance to your brand and drafts a comment in your voice, and it deliberately skips threads where the only thing to add would be a pitch. The rule in its scoring brain says the value on HN is finding the right thread and having something real to say.

It runs on the Claude subscription you already pay for, so there's no extra AI bill for the browsing and drafting, and no third-party API to lose. You get a ranked queue on a local dashboard, you edit the draft until it sounds like you, and you post it yourself. Scheduling tools have solved the publish half of social. This is the reach half, and it's free to try with /plugin marketplace add trysocialcue/socialcue.

I'll be honest about the limits. HN is hostile to anything that reads as marketing, so the drafts are a starting point, not a paste-and-go. And the discipline in the Reddit self-promotion rules applies here with the volume turned up. If you wouldn't say it at a dinner with engineers, don't say it on HN.

A weekly HN routine that survives shipping

HN work fails when it has no fixed slot. Give it one, and keep it small:

• Monthly: post in "What are you working on?" the day it appears. Two paragraphs, one link, one lesson.
• Daily, ten minutes: scan Ask HN and your keyword search. Comment on at most one thread, and only if you can help without the product.
• When news breaks in your category: drop everything for the thread. That's the one you've been waiting for.
• Weekly: look at referrals from news.ycombinator.com in your analytics, and note which comment sent them. Do more of that.

Pair that with a scheduler for your own posts, like the Postiz and Social Cue playbook lays out, and you have a distribution loop that runs on twenty minutes a day. Launch day will come. The comments are where HN pays out every week to the founders who show up.