In brief
- Influence buys borrowed attention and social proof. It buys neither cheap traffic nor a predictable acquisition channel that you open and close like an ad account.
- Audience size changes the nature of the partnership, not just its price. A small audience gives engagement and a say over the message; a large audience gives awareness and takes the other two away.
- The mechanism pays on a product that is visible, desirable and quick to decide on. On a long, technical professional purchase approved by a committee, it mostly produces spending.
- B2B influence exists, but it does not resemble consumer influence. Sector experts, long-form content, LinkedIn and public speaking, never a sponsored story with a promo code.
The scenario comes up several times a year in meetings. A small business has paid a creator followed by a few tens of thousands of people, the post did well, and the promo code generated a handful of orders. The manager draws a clear conclusion: it doesn’t work.
The diagnosis is almost always the same, and it is not about the choice of creator. The business paid for one thing believing it was buying another. It wanted an acquisition channel; it rented an audience.
This confusion explains most campaigns judged to have failed, including those that actually worked. Until you have established what influence really produces, the rest of the reasoning (which profile, which budget, which platform) is built on sand. Choosing the profile, payment and the contract are dealt with separately, in our guide on how to choose and frame an influencer partnership.
What you are really buying
An influencer partnership gives you access to an audience you do not own. You rent it for the time of a post, then you hand it back. That is the first term of the contract: borrowed attention.
The second term is the most interesting, and it is the one people forget to value. When someone their audience trusts shows your product, they transfer a fraction of that trust. That is social proof, and no banner ad knows how to produce it.
These two things do not behave like paid traffic. Borrowed attention evaporates within forty-eight hours: the post sinks down the feed and you cannot switch it back on by raising a bid. Social proof, on the other hand, remains usable for months if you thought to negotiate the rights.
The consequence for how you judge a campaign is direct. If you only look at sales in the three days that follow, you are assessing only the most perishable half of what you paid for. The other half plays out in reuse: video clips reused in paid advertising, visuals on the product page, a quote on the home page.
What to remember An influencer campaign from which you keep nothing after the post has been paid for at half price for nothing. Reuse rights are negotiated in the first message, not after you have seen that the video works.
Audience size changes the nature of the contract
The usual segmentation (nano, micro, macro, celebrity) is presented as a price grid. In reality it describes four distinct commercial relationships, with counterparts that have nothing in common.
Engagement rate falls mechanically as the audience grows. Someone followed by 4,000 people still replies to comments and knows part of their community, which makes their recommendation credible. At a million followers, it has become a media audience, with a media outlet’s reaction rates.
Control over the message reverses at the same time, and that is what businesses anticipate least. A small account accepts a precise brief because it needs the collaboration. A large account has an agent, a rate card, a format it does not change, and you sign its terms.
| Audience size | Usual payment | Engagement | Control over the message | What it is for |
|---|---|---|---|---|
| Nano (under 10,000) | Product gifting or a small fee | The highest, relationship still personal | Good on substance, weak on production quality | Social proof in volume, message testing |
| Micro (10,000 to 100,000) | A fee, often three to four figures | High, thematic community | The best compromise | Acquisition in an identified niche |
| Macro (100,000 to 1 million) | A fee of four to five figures | Falling, mixed audience | Weak, format imposed by the creator | Awareness, brand credibility |
| Celebrity (over a million) | A media campaign budget | The lowest relative to audience | Almost none, heavy contractual framework | Announcement effect, launch |
A tempting line of reasoning is to replace one large account with twenty small ones, for the same budget. It holds on paper and breaks down in execution: twenty partnerships means twenty briefs, twenty follow-ups and twenty levels of quality. The real cost is not the fee, it is the time of the person coordinating.
When it works, and when it is a waste
Influence has a narrow, identifiable zone of effectiveness. Your product either fits into it or it does not.
- The product is understood from an image, without needing to be explained.
- The purchase decision is made alone, in a few minutes.
- The price stays within the target’s impulse-buying range.
- Use is visible to others, which makes people want to show it.
- The market is crowded and trust makes the difference between two similar offers.
- You have stock available and a product page that already converts.
With five or six lines ticked, influence offers one of the best cost-to-impact ratios in digital marketing. With two lines, it will be expensive, hard to measure, and you will have no way of knowing why.
Many businesses have nothing to gain from this channel, and it is worth saying frankly. A machine-tool manufacturer, an accounting firm, a software publisher billing several tens of thousands of euros a year, a tradesperson working within a thirty-kilometre radius: none of these profiles should put a single euro into a partnership with a consumer creator.
The same budget produces more elsewhere: local search and reviews for the tradesperson, case studies for the software publisher. And for everyone, the prior question is whether the landing page converts the visitors it already receives, a subject we cover in our article on optimising conversion rate when traffic is low.
B2B influence exists, but it resembles nothing above
The word influencer is almost never used there, which is already a clue. People speak of sector experts, recognised consultants, former executives, analysts, professional community leaders. Their audience is small: two thousand to twenty thousand people, sometimes fewer.
That audience has a particularity that changes everything. A significant fraction of these people sign budgets or directly influence those who sign them. A post read by 3,000 purchasing managers in a sector is worth more than a video seen by 200,000 people with no decision-making power.
What changes in practice
The format is long: in-depth article, sector study, webinar, conference talk, podcast, paid newsletter. Nobody makes a fifteen-second story with a promo code for an industrial director. Production takes time on both sides, often several weeks.
Payment follows a different logic. You rarely pay for a post: you pay for a talk, co-produce a study, fund an event, buy consulting time.
What you buy is not attention, it is legitimacy. When someone your buyer already reads cites your solution, you reduce the time they will spend justifying you to their committee. It is a shortcut in the sales cycle, not a source of orders.
The classic mistake is to apply consumer codes to an expert: locked brief, imposed talking points, line-by-line approval. They will refuse, because their independence is their stock in trade. Or they will accept, and you will have destroyed exactly what you wanted to rent.
Where influence fits in an overall plan
Influence is not a marketing plan, it is an accelerator. It works when it adds to something that already exists, and it fails when it replaces what is missing.
| Criterion | Influence | Classic advertising | Brand content |
|---|---|---|---|
| Entry cost | Medium, one partnership is enough to test | Low, a few hundred euros | Low in euros, high in time |
| Time to first signal | A few days | A few hours | Several months |
| Lifespan | 48 to 72 hours for attention, lasting for reused content | As long as the budget, not a minute more | Years if the content is maintained |
| Control over the message | Shared, the creator keeps the last word on form | Total | Total |
| Measurability | Low directly, decent with a dedicated code and tracked link | High | Medium and indirect |
| What is left at the end | The usage rights you negotiated | Nothing | The asset itself |
What influence complements: low awareness among a precise target, a product launch, missing proof of use, entry into a market where nobody knows you.
What it never replaces: a product page that converts, an email list you own, a presence in search results. These foundations belong to the order of priorities of a digital marketing plan, and influence comes after. A borrowed audience sent to a site that does not convert produces a traffic spike and nothing else.
The most profitable point of contact between the two worlds remains content. A well-negotiated partnership leaves you visuals and testimonials that your team would have neither the time nor the talent to produce, and which then feed your editorial production for months.
Reputation risk: you are renting a person’s reputation
A partnership associates you with an individual, with their opinions, their private life and their other contracts. You are not buying neutral ad space: you are buying a piece of a person who carries on living after the post.
The risk takes three forms. The partner’s personal misconduct, which mechanically splashes onto you. A competing or incompatible partnership, which ruins the credibility of your message. And rejection by the audience itself, when the community judges the placement opportunistic and says so in the comments.
The French legal framework has caught up with the subject. The law of 9 June 2023 regulating commercial influence requires the advertising nature of content to be stated explicitly, with penalties of up to two years’ imprisonment and a €300,000 fine, raised to five years and €750,000 when the offence is committed online (Article L132-2 of the French Consumer Code), which is the typical case in commercial influence. The fine may also be raised to 10% of average annual revenue. The advertising brand is not outside its scope: a badly labelled campaign is your problem too.
Three measures reduce exposure without costing much. A removal clause that lets you have the content taken down and stop reusing it. Approval before publication, at least of product claims. And a spreading rule: nobody takes most of your influence budget.
The mistake not to make An agency that talks to you about reach, impressions and cumulative views without ever saying the words revenue, average basket or cost per order is selling you a report, not a result. Ask the question before signing: by what precise mechanism will this campaign be linked to my sales? If the answer is a reach table, the campaign will be impossible to verify by design, and the outcome will be positive whatever happens.
What you can do this week
- Write in one sentence what you want to buy: awareness, reusable social proof, or direct sales. Only one of the three, otherwise you will not be able to judge.
- Run your product through the six criteria above. Fewer than four lines ticked: stop and put the budget elsewhere.
- Look at what social media already brings you in traffic and orders. It is your point of comparison, and it is free.
- Ask each candidate for their statistics over ninety days: real reach, share of French audience, age. A refusal is an answer.
- Set up measurement before the campaign: one promo code per partner, a tracked link, a dedicated landing page. After the post, it is too late.
- Negotiate reuse rights from the first exchange, six or twelve months, paid advertising included.
One technical point derails many reviews. Some of the clicks coming from the in-app browsers of Instagram or TikTok are lost before reaching your measurement tools, which makes visitors you paid for show up as direct traffic. The mechanism is detailed in our article on what your measurement tool does not tell you. To correct it, the DataFirefly Server-Side platform, published by Datafirefly Limited, which belongs to the same group as Dotsland, offers a free plan of up to 10,000 requests a month, enough to check the gap on one campaign.
Frequently asked questions
Does influencer marketing really work?
Yes, on a precise category of products: visible, desirable, quick to decide on and affordably priced. Outside that zone, it produces reach and very few sales. The useful question is therefore not whether the channel works, but whether your product fits into it.
How much does a partnership with an influencer cost?
Payment ranges from product gifting for an account with fewer than 10,000 followers to a media campaign budget for a celebrity. In between, a micro-influencer sits at a three- or four-figure fee per post. Add coordination time, which becomes the main cost as soon as you multiply partners.
Is a micro-influencer or a big account better?
It depends on what you are buying. A big account gives fast awareness and imposes its format on you. A micro-influencer gives better engagement, a real say over the message and a low entry cost, at the price of limited reach and more uneven production quality.
Does influence work in B2B?
Yes, but in a form that has nothing to do with consumer influence. It goes through sector experts on LinkedIn, conference talks, co-produced studies and specialist podcasts. What you buy is legitimacy with a decision-making committee, and measurement focuses on shortening the sales cycle rather than on direct orders.
How do you know whether an influencer campaign brought anything in?
By preparing measurement before the post: one unique promo code per partner, a tracked link, a dedicated landing page. Then compare attributed revenue with the full cost, coordination time included, and add the value of the content you have the right to reuse.
What it changes in your decisions
Establishing that influence buys borrowed attention and social proof settles most internal disagreements. The debate stops being about the choice of creator and moves to the only question that counts: what you will be able to do with the campaign once the post has sunk down the feed.
For most of the businesses we support, the budget produces more on search, content and conversion before moving to influence. For those whose product fits the zone of effectiveness, it is the reverse, and it must be done seriously: measurement in place, rights negotiated, risk spread. Both answers are decided on the same criteria, and our search and social visibility expertise consists of making that call before spending.
Unsure whether influence makes sense for your business? In a first meeting, we look at your product, your average basket, the share of traffic social media already brings you and what your landing page does with it, then we tell you frankly whether the budget would be better placed elsewhere. Let’s talk.