A founder spends forty minutes drafting a LinkedIn post, agonizes over the hook, publishes it, and refreshes the notification bell for the rest of the afternoon. In that same forty minutes, they could have left fifteen genuinely useful comments on posts by the investors, journalists, and peer founders whose audiences already overlap with the one they’re trying to reach. Almost nobody chooses the second option, because it doesn’t feel like output. It’s usually the better trade.
A post competes. A comment borrows.
Publishing a post means competing for attention inside a feed algorithm optimized to reward whoever posts most consistently in a format it already favors - a game a founder running a company part-time is poorly positioned to win against people who post for a living. A comment on someone else’s post doesn’t compete for that algorithm’s favor. It shows up directly under content an audience has already decided to read, next to a name the platform will now show alongside every one of that person’s future posts. It’s a smaller stage, but it’s a stage the founder didn’t have to build an audience to stand on.
That’s the part most founders miss: the audience for a good comment isn’t the person who wrote the original post. It’s everyone else reading the thread, deciding who in the replies sounds like they actually know what they’re talking about. A specific, useful comment on a well-read post reaches more of the right people, more reliably, than a mediocre post reaches anyone.
Agreeing is invisible. Adding something is not.
The comments that get noticed are never “Great point!” or a string of applause emoji - both are functionally invisible, because they carry no information a reader couldn’t have supplied themselves. What gets remembered is a comment that adds a fact the original post didn’t have, disagrees with one specific claim while agreeing with the rest, or answers a question the post raised but didn’t resolve. That kind of comment does the same job a good guest appearance does: it borrows an existing audience’s attention and gives the founder a few seconds to demonstrate they’re worth listening to, on a topic that audience already cares about.
Why this compounds faster than posting does
A post lives for a day, maybe two, before the feed buries it. A comment lives as long as the post underneath it stays relevant, and a sharp one gets its own quote-shares and replies independent of whatever the founder posts next. More importantly, a habit of commenting well builds something a habit of posting alone never does: a memory, in the heads of the specific investors, journalists, and operators worth being known by, that this founder shows up with something useful to say. That reputation gets built one thread at a time, in rooms the founder didn’t have to fill themselves.
What this doesn’t mean
It isn’t an argument for never posting - a founder with nothing published anywhere has no home base to send that borrowed attention back to. It’s an argument about where the marginal hour goes. Most founders default that hour to their own blank compose box because it feels like the founder’s platform, when the compounding return, especially early, sits in the replies underneath everyone else’s.