Strategy ·
Comments on LinkedIn: the invisible asset of your personal brand
Almost nobody plans their LinkedIn comments. They get published between meetings, in a queue, without much thought. That is paradoxical: commenting well pays off almost as much as publishing well and takes a fraction of the time.
This guide is for professionals who want to understand why a good comment builds authority better than a mediocre post, which posts are worth commenting on and what kind of comments work in the medium term. It also explains which comments betray insecurity and are better left unsent.
By Sheena de PunkVoice · Edited by Mario Pérez
Why comments matter more than they seem to
Every public comment you leave is seen. Not only by the person who owns the post, but by the thousands of people who see it (a few hundred, thousands, tens of thousands depending on reach). In that sense, commenting well is publishing to the audience of whoever you choose.
There is a less visible side effect: LinkedIn's algorithm learns which topics you master from where you comment. If you comment with judgement on posts about B2B editorial strategy, the platform marks you as a reference on that subject and starts recommending your profile to others.
On top of that, commenting well builds real relationships. An interesting conversation in a public comment is the best prelude to a later direct message. The friction of starting a conversation drops to zero once you have crossed paths in public with substance.
Which posts are worth commenting on
On posts from people you want associating your name with them. Leaders in your industry, editorial references on the topic you want to be positioned for, people you might one day collaborate with. Commenting substantively on their posts is the most efficient way to appear on their radar without sending a cold message.
On posts where you have something distinctive to add. If you have worked on something specific the post touches on, and you can add an observation, a data point, a caveat, it is worth it. If all you can do is nod, better not to comment.
On posts whose target audience is your target audience. If the writer's audience matches the audience you want to attract, your comment puts you in front of relevant people at no advertising cost.
There is no point commenting on posts from people whose audience is inflated by pods (genuine comments get diluted), on posts about topics you do not master (they notice in the first sentence), or on posts where you are only going to leave an emoji.
Which kinds of comment build authority
Comments with a caveat. When you agree with the bulk of the post but qualify one specific point from your experience. It demonstrates you genuinely read it and that you have judgement of your own.
Comments with a respectful counterexample. When you bring a case or a data point that gently challenges the thesis. It works when it is well argued and not gratuitous controversy. The original author usually replies and a valuable public conversation opens up.
Comments that extend the argument. When the post opens a topic and you add the next layer: "I would add that this also happens in X situation", "this fits with Y's case". You build on what they published and you both gain.
Comments with a substantive question. When you ask something the author had not addressed and that adds depth. If the question is interesting, it opens a debate and stays visible to the whole audience.
What unites all four types: they require having read the whole post and having something of your own to add. They take longer than an emoji, but they pay off hundreds of times more.
Comments better left unsent
"Great post" plus a flame emoji, or variants. The most widespread comment and the least useful. It communicates that you did not read the content or that you have nothing of your own to say. When somebody signs hundreds of comments like that, the name gets discarded automatically.
"Totally agree." With no development, it amounts to saying nothing. It adds noise to the post and costs the signer credibility.
Generic templated comments. Recognisable a mile off because they would fit any post on any topic. It usually shows because the first three words are always the same.
Self promotional comments out of context. Turning up on a post about any topic with "this reminds me of a service I offer" betrays commercial insecurity and pushes future opportunities away.
Comments with irrelevant nitpicking. Pointing out a typo, a trivial detail, a personal preference. It reads as ego, not as a contribution.
Comments using generalist AI without thinking. They usually show: a uniform structure, a slightly impersonal tone, an obvious conclusion. If you are going to use AI to comment, use it to think the comment through, not to write it.
How much time to spend commenting
The reasonable amount: 15 to 30 minutes a day on working days. Enough to leave between 5 and 10 genuinely good comments. Beyond that, quality falls and it starts looking like comment activism, which erodes your reputation.
Those 15 to 30 minutes pay off more if you concentrate them in the first hours after publishing your own posts (when you are most attentive to the feed) or early in the morning (when you see recent posts from the people you actively follow).
One rule that protects you: if in a given morning you cannot find 5 posts genuinely worth commenting on, do not force it. Some days the feed does not deliver, and forcing mediocre comments damages your personal brand.
Commenting on the comments: the conversation almost nobody exploits
There is a layer almost nobody uses: commenting on the replies other people have left on a post. When you see an interesting comment from somebody else and add something to their comment, you are starting a side conversation.
That side conversation is usually where real relationships get built. The original author sees their post generated conversation between readers, the other commenters see your name as somebody who contributes, and a low friction channel for a later direct message opens up.
It is LinkedIn's most underused form of networking. Almost zero cost, high return, and far less saturated than always commenting directly on the original post.
Should you prioritise commenting or publishing?
If you are starting a new profile in a niche, prioritise commenting for the first four to eight weeks. With no initial audience, your posts barely travel. Your comments reach the feed of people who have been active for a while. It puts you in place sooner and builds your network while you decide what to publish.
If you have an established audience, balance both. A reasonable ratio is publishing two or three times a week and commenting daily. If you stop commenting, your profile becomes invisible between posts and the network cools.
If you are pausing publishing (holidays, an intense work period, a sabbatical), keeping at least moderate commenting preserves recognition without the pressure of producing your own content. A good strategy for not disappearing entirely during periods when you cannot spend time writing.