HN expert comments before self-promotional posts
Treat useful comments on other people's threads as a demand channel, because expertise often converts more cleanly than showing up only when you want attention for your own launch.
Why this can grow a startup
A good comment lets buyers discover you while they are already reading about the problem. There is less defensive filtering because you are helping the discussion rather than asking the room to switch context into launch mode. Over time that builds familiarity, and the inbound interest tends to arrive warmer because it started from demonstrated expertise instead of announcement copy.
Source-backed example
In Ask HN: What HN post made you money?, one founder said random expert comments led more reliably to inbound sales interest that converted into revenue than the Show HN spike did.
Source-reported evidence
Source: Ask HN: What HN post made you money?
The founder said comments, not posts, led more reliably to sales interest that converted
Attributed to the cited source; GrowthDex has not independently verified it. Use this as context, not as a forecast, benchmark, or recommended target.
Evidence scope: claims and metrics are attributed to the linked source; GrowthDex has not independently replicated the reported result. Check the original context and validate fit before applying it. Read the evidence methodology.
Source discovered: May 27, 2026
When to use it
Use this when Hacker News, Community, Founder-led is relevant to community-led growth, founder-led, trust building and you can run a bounded test with a free budget.
When not to use it
Do not use it as a substitute for customer evidence, a clear owner, or a measurable stop condition. Local platform rules and market behavior still need checking.
How to do it
- Choose one target segment and define the exact next action this tactic should prompt.
- Follow Hacker News community guidelines: do not solicit votes, comments, or submissions; share a useful working demo and an original explanation.
- Record a baseline for: Target users from this channel who complete the intended first action. Set a guardrail that would make you pause the test.
- Run a narrow pilot and choose a test window that fits the normal decision or use cycle; do not scale before you have observed the full cycle.
- Compare the signal with its baseline. Scale only if the intended action improves without crossing the guardrail; otherwise revise one variable or stop and record what you learned.
Compare a stack for your situation
Compare source-backed tactics against your product, stage, budget and channel strengths, then choose one experiment to test.
Explore the context
Did you launch this experiment?
Report a launch to help us understand which growth ideas founders put into practice.
Apply this with an operator
Build creator and community systems around real incentives, trust, and repeat participation.