Commenting on Other People's LinkedIn Posts Is Just as Powerful as Publishing Your Own

To build visibility on LinkedIn, the instinctive reaction is almost always the same: I need to post more. More content, more frequency, more output. It’s a logical response — but an incomplete one.

The people who get real results from the platform — qualified new contacts, business opportunities, invitations to events or panels — have often figured out something others miss: the comments section is a standalone distribution channel, not an accessory to someone else’s post.

Why comments work better than you think

When you comment on a post, your reply doesn’t stay confined to the author’s profile. LinkedIn distributes it to your own network, in exactly the same way it would treat original content. If the post already has strong traction — hundreds of likes, dozens of comments — your contribution gets exposed to an audience that doesn’t know you yet.

It’s a free amplification mechanism. You’re essentially hitching your visibility to a piece of content that’s already working.

There’s also an element many people underestimate: a comment is synchronous with the moment a post is climbing. Those who engage in the first few hours get maximum exposure. Those who comment three days later, when the post has already gone cold, get far less.

The problem with useless comments

Opening the comments section on any high-visibility LinkedIn post is instructive, in the worst possible way. You’ll find:

• “Great insight!”
• “100% agree”
• “Very interesting, thanks for sharing”
• A single clapping emoji, on its own, with no words

These comments achieve nothing. They build no perception of expertise, generate no clicks to your profile, and open no conversations. They’re noise.

The paradox is that the people writing them think they’re networking. In reality, they’re burning time and burning opportunities.

What makes a comment effective

A comment that works has one defining quality: it adds something the post alone didn’t have. That might be a data point that reinforces the author’s argument, a concrete experience that confirms or challenges it, or a question that opens the thinking further.

Three structures that work well in practice:

The integration with a concrete example

If someone writes that B2B clients are now making decisions more slowly due to economic uncertainty, and you’re a sales director who has lived through exactly that, you might add: “In our sector — industrial machinery, sales cycles of six to twelve months — we saw buying committees grow from three to six people between 2022 and 2024. Same budget, twice the time.”

You’re not contradicting the author. You’re making an abstract argument tangible. The reader immediately understands who you are and what you know.

The respectful disagreement

This is the riskiest move and the one with the highest return. If you hold a different view from the author and can express it without aggression, you get three things at once: visibility, credibility, and often a direct reply from the author that triples your comment’s exposure.

Tone matters. “I don’t entirely agree, and here’s why” works. “This is wrong” doesn’t — it closes the conversation instead of opening it.

The question that reveals your point of view

Asking a question doesn’t mean hiding behind one. A well-constructed question already signals your perspective. “Have you noticed any difference between companies that made this shift before 2020 and those that did it after?” says a great deal about your knowledge of the subject, even though technically you’re asking, not asserting.

Who is worth commenting on

Not every post deserves the same investment of attention. It pays to be selective.

Authors whose audience is different from yours. If you publish for an audience of CFOs and you comment on a post read by CFOs, you’re preaching to the converted. If instead you comment on a post that’s popular among HR directors or COOs — people who might cross your path for business reasons — you’re expanding the perimeter of your visibility.

Posts on topics where you have a genuine opinion. There’s no need to comment on every subject. You should comment on the ones where you have something to say that isn’t already in the comments section. Open it before you write: if the first three comments already say what you were going to say, it’s worth either reframing your take or moving on.

Posts by clients, former colleagues, and partners. Here a comment serves a dual function: it’s public visibility and, at the same time, a signal of attention to someone who already knows you. It’s one of the least forced ways to stay in someone’s mind without sending private messages that come across as follow-up nudges.

How much time to put in

A common objection is time. But commenting effectively doesn’t require hours. It requires intention.

Fifteen minutes a day — spent reading three or four selected posts and leaving a considered comment on one or two — produces better results than an hour of scrolling the feed without engaging. The difference is entirely in the approach: it’s not about reacting to everything, but about choosing where it makes sense to put your voice.

A marketing director at a mid-sized manufacturing company, for example, doesn’t need to comment on fifty posts a week. Five or six, well chosen, in areas like supply chain, export, or industrial digital transformation — the territories where their expertise is recognisable and valued — is enough.

The comment as the opening line of a professional relationship

There’s one final point worth naming. LinkedIn is a platform for relationships, not just broadcasting. And relationships almost always begin with something small: a reply, a reaction, a brief exchange.

Many professionals who today have solid business relationships with someone they met online can pinpoint the precise moment the connection started: a comment on a post, a reply to one of their comments, a thread that grew naturally from there.

This isn’t romanticism. It’s the normal mechanics of professional relationships, applied to a digital context. A comment is often the first step — more direct than a cold connection request, less intrusive than a private message.

Publishing original content still matters. But those who reserve all their energy for that alone, and ignore the conversation happening around other people’s posts, are using LinkedIn as if it were a one-way broadcast channel. It isn’t. It never was.

For a consultant this mechanic carries particular weight: reputation is also built outside your own posts. The full picture is in our piece on B2B personal branding.