Are Brands Taking ‘Free Marketing’ From TikTok and Instagram Comments?

For social teams, the comment section has become part of the content strategy.

A creator or celebrity posts something on TikTok or Instagram that starts gaining traction. A brand spots an opportunity, drops a funny or reactive comment underneath and, if the timing is right, suddenly thousands of people are liking the reply and seeing the brand.

No production budget or media spend required. Sometimes there isn't even an obvious connection between the brand and the original post.

It's easy to see why brands do it. Comment sections on TikTok and Instagram have become entertainment spaces in their own right, with people actively opening them to see the reactions, jokes and conversations happening underneath the content.

But there's also growing pushback from creators and celebrities questioning the value exchange when brands use those spaces to generate exposure from audiences they have spent years building.

That raises an interesting question for social teams: when does good community management become free marketing at someone else's expense?

Comment sections have become media spaces in their own right

On both TikTok and Instagram, the content doesn't necessarily end when the video or Reel finishes.

The comments are often part of the experience. People head there to see whether everyone else had the same reaction, find the funniest response, ask questions or see whether the creator has joined the conversation themselves.

Brands have understandably noticed the opportunity.

Community managers are now expected to spot cultural moments quickly, understand the tone of a conversation and know when their brand has permission to participate. Done well, a comment can introduce a brand to a huge audience without publishing anything on its own account.

But that visibility isn't appearing from nowhere. It's happening underneath content someone else created and in front of a community someone else built.

That's where the conversation gets more complicated.

Creators are questioning who benefits

For creators, their audience is part of their commercial value. They've spent years building relationships with followers, developing formats people recognise and creating the content that keeps those communities coming back.

So when a large brand arrives underneath a viral post, leaves a funny comment and receives thousands of interactions from that audience, it's understandable that creators might question who is benefiting from the exchange.

There's an interesting tension here. A creator's community can be valuable enough for a brand to pay to reach through an influencer partnership, while simultaneously being treated as freely accessible whenever one of their organic posts takes off.

For brands, that doesn't mean the answer is to stop commenting on creator or celebrity content altogether. Social media is built around interaction, and brands should be able to participate in the communities relevant to them.

It does mean they need to think about why they're entering a conversation and whether they're actually adding anything when they get there.

Not every viral post needs a brand comment

Reactive community management has become a huge part of how brands behave on TikTok and Instagram.

Something starts trending and social teams immediately start thinking about how they can get involved. When there's a genuine connection to the brand, that instinct can produce brilliant work.

But sometimes the better question is simply: does our brand actually need to be here?

If the only connection between a brand and a post is that millions of people happen to be looking at it, the resulting comment can feel less like community participation and more like an attempt to borrow reach.

We've all seen viral comment sections gradually fill with verified brand accounts competing to deliver the funniest one-liner. Occasionally, one of them lands perfectly. Other times, the comments become so focused on getting attention for the brand that they add very little to the original conversation.

Being fast isn't enough if the brand has no relevance to the moment.

Good community management starts with relevance

Community management shouldn't be about putting your brand into as many conversations as possible. It should be about understanding which conversations your brand has a reason to participate in.

That requires more than having someone monitoring trending posts.

Social teams need a clear understanding of their audiences, the creators and communities they already have relationships with, the cultural spaces where the brand naturally belongs and the tone of voice they can credibly use within them.

The same comment might feel completely natural coming from one brand and completely forced coming from another.

Context matters, and so does the existing relationship.

If a creator has worked with your brand for years, regularly interacts with the account or genuinely uses your product, appearing in their comments may be a natural extension of that relationship. If you've never interacted with them before and arrive for the first time once their post reaches five million views, the intention can feel very different.

Community management should start with your own community

There's another contradiction worth considering.

A brand can have a social team racing to comment underneath the latest viral celebrity post while customers underneath its own content are waiting for replies.

If community is genuinely the strategy, your own audience should be part of it.

Respond to questions. Recognise the people who regularly interact with you. Join conversations happening underneath your own posts. Pay attention when people are confused, excited or asking for something repeatedly.

Those interactions might not generate the same instant reach as landing a top comment underneath a viral TikTok, but they're much more important to building an actual relationship between the audience and the brand.

External reactive commenting can then become an extension of that community strategy rather than the strategy itself.

Sometimes you should be paying the creator

Comment sections can also tell brands something important about who they should be working with.

If your social team repeatedly finds itself wanting to participate underneath the same creator's content, there's probably a reason.

Maybe they naturally talk about your category. Perhaps their audience overlaps strongly with yours, or they have a style of content and conversation that feels particularly relevant to the brand.

At that point, the opportunity might be bigger than another witty comment.

Maybe you should actually work with them.

Comments can be a useful creator discovery tool because you're seeing the relationship between a creator and their audience in real time. You can see the language people use, the conversations they start and how the creator responds.

If there's a genuine fit, a formal partnership means both sides benefit from the value being created rather than the brand repeatedly trying to access the community from underneath their organic posts.

Your own comments are an always-on research tool

The biggest opportunity within comments may not be commenting at all.

It's listening.

Every TikTok or Instagram post gives brands a small piece of qualitative audience research. Comments tell you what people noticed, what confused them, what they found funny, what they disagree with and what they want to know next.

They can also reveal the language people naturally use when talking about your brand, product or category, which can be very different from the language sitting in a marketing strategy or creative brief.

That information should be feeding back into content.

A question that keeps appearing could become the next video. A joke from the community might develop into a recurring format. A misconception could become an explainer, while an unexpected reaction to a product might reveal an entirely new creative angle.

On TikTok, replying to a comment with another video makes that relationship particularly visible, but the same principle applies across Instagram.

Publishing should be the start of the feedback loop, not the end of it.

Community managers should be closer to the wider social strategy

All of this makes community management a much more strategic discipline than it can sometimes be treated as.

The people spending hours inside the comments have access to an enormous amount of audience intelligence. They see sentiment changing before it appears in a monthly report, know which references audiences immediately understand and can spot recurring questions or frustrations that might never reach the wider marketing team.

That information can influence far more than replies.

It can help shape content planning, creator selection, tone of voice, reactive strategy and even wider customer or product conversations.

If community management only happens after the "real" social content has been created and published, brands are missing a valuable source of insight.

Community management needs judgement, not just a tone of voice

Giving a community manager a brand personality and a list of approved phrases isn't enough.

They need the freedom and judgement to understand when the brand should speak, how it should respond and, importantly, when it should leave a conversation alone.

That becomes particularly important as brands try to sound more human online. There can be a temptation to make every brand behave like the funniest person in the group chat, regardless of what the business actually is or who its audience is.

The brands that feel natural in comment sections tend to have a much clearer understanding of their role. Their responses feel connected to the conversation rather than engineered purely to get likes.

Sometimes that's funny. Sometimes it's helpful. Sometimes it's simply acknowledging someone.

And sometimes the right response is nothing at all.

Think about the value exchange

The conversation around brands getting "free marketing" from creator and celebrity comment sections is ultimately part of a much bigger shift in social.

Audiences, creators and brands are all becoming more aware of the value attached to attention.

For creators, a highly engaged comment section isn't just a nice indication that a post performed well. It's part of the community they've built and, ultimately, part of their commercial value.

Brands need to recognise that when deciding how they participate.

That doesn't mean every interaction requires a paid partnership, and it would be strange to turn ordinary social interaction into something entirely transactional. But if a brand's strategy consistently relies on extracting attention from other people's communities, it's worth questioning whether that's really community management.

Being part of culture doesn't mean being everywhere

There is still enormous value in brands behaving like active participants on TikTok and Instagram.

Good community management can make a business feel more human, strengthen relationships with audiences, uncover useful insights and create moments a planned content calendar never could.

But participation needs judgement.

Creators and celebrities aren't simply pieces of organic media inventory, and their audiences aren't automatically there for brands to market to because their comment sections are open.

As creators become increasingly aware of the commercial value of the communities they've built, brands should expect that value exchange to be questioned more often.

The answer isn't to stop commenting. It's to make sure your brand has a reason to be in the conversation and is contributing something when it gets there.

TikTok and Instagram comments are becoming valuable social real estate. The question for brands isn't whether they should be there, but whether they're contributing enough to deserve the attention they're getting.