Who do you trust to tell you what to read?

BookTok made reading fashionable again. Publishers, retailers and brands have since bought into that influence — and the distinction between a recommendation and an advertisement is becoming very hard to see.

The most consequential change in publishing this decade may not be the decline of the high-street bookshop or the ascent of the e-reader. It may be the arrival of the individual reader as a distribution platform.

A successful creator now owns the thing publishers have spent fortunes trying to rent: an audience that trusts their taste. A newspaper critic recommends a novel and may influence a reader over a fortnight. A creator with a million followers recommends the same novel and can move stock before lunch. Publishers noticed. Retailers noticed. Brands noticed. And in time the creators were absorbed into the commercial infrastructure they had disrupted.

A publishing professional put the difficulty to The Guardian plainly during an earlier inquiry into the platform’s monetisation: paying creators to promote books raises the same question as paying critics — whether money and perceived independence can occupy the same room. Four years on, the question has not been answered. It has merely got larger.

This summer a prominent British book creator accepted a paid campaign for Amazon Kindle, and the reaction was immediate. It is worth being precise about why, because the interesting part is not the product.

Kindle is an excellent device. Digital reading has widened access enormously — for travellers, for readers in small flats, for anyone who wants a library in a coat pocket. There is nothing disreputable about promoting it. The friction was contextual. The creator had built a public identity around books as objects, around bookshops, around the physical culture of reading, and had previously expressed views sympathetic to independent booksellers and sceptical of Amazon. The Times reported that the promotion drew scrutiny precisely because of that earlier criticism.

So the question is not whether Kindle is bad, nor whether creators are entitled to earn a living. They plainly are, and the pretence that cultural work should be unpaid has done more damage than any sponsorship. The real question is narrower and more uncomfortable: at what point does commercial activity begin to alter the credibility of the person conducting it?

Influencer marketing works because advertising has become easy to refuse. We skip it, block it, scroll past it. What we do not refuse is a person we trust. That makes the creator’s principal asset not reach but credibility — and a recommendation that feels unpaid is worth considerably more than one that does not, precisely because it does not read as an advertisement.

Britain’s Advertising Standards Authority is unambiguous that influencer advertising must be identifiable as advertising, and paid or commercially controlled content falls squarely within the rules. This is right, and it is necessary. It is also insufficient. Disclosure establishes that money changed hands. It cannot establish what the person would have said had it not.

Traditional media solved this crudely but visibly, by building a wall between the advertising department and the editorial floor and then writing the wall into its rules. That wall is not a moral achievement; it is an administrative one, and it exists because publishers learned the hard way what happens without it. Creator culture arrived at scale far faster than any comparable structure could be built. The rules are still in transit.

Old bookselling ran on thousands of small, uncoordinated decisions: the bookseller who pressed something unexpected into your hands, the customer who wandered in out of the rain, the reviewer who championed a debut nobody had asked for, the friend who texted three words and a photograph of a cover.

A platform compresses all of that into a single loop. A book performs. Engagement is detected. Distribution widens. More people see it, more people buy it, and the sales figures are then read back as evidence of importance — which earns further visibility. Success manufactures attention and attention manufactures success.

This produces genuine cultural moments, and it also produces concentration. Publishers have said openly that the platform’s gravity can pull shelf space, chart positions and promotional oxygen away from books with no viral dimension at all. The risk is not that BookTok sells too many books. It is that commercial performance starts to look indistinguishable from cultural worth — and that a novel’s failure to suit a sixty-second format is quietly reclassified as a failure of the novel.

The most successful book creators are no longer readers who happen to have an audience. They are media businesses with audiences that rival established magazines, videos that outdraw newspaper reviews, and partnerships extending well past books into technology, fashion, travel and beauty. The useful comparison is no longer reader against influencer. It is publisher against broadcaster against magazine — all competing for the same attention, all carrying commercial interests, only one of them historically obliged to declare where the money sits.

Which is why this should not collapse into accusations of hypocrisy against individuals. Any single creator’s arrangements are a symptom. The structural fact is duller and more important: BookTok has become too commercially valuable for the publishing industry to leave alone, and a channel that valuable does not stay informal.

It would be lazy, and wrong, to dismiss the thing as merely commercial. Its achievements are considerable. It has made reading aspirational for millions of young people at exactly the moment the industry had convinced itself they were lost. It has resurrected out-of-print titles, built communities around books, and given visibility to authors the trade would never have promoted. It has occasionally forced publishing to listen to readers rather than instruct them, which is not a small correction to a very old habit.

But influence at that scale carries an obligation, and the obligation is disclosure — not of every proof copy and party invitation, which would be absurd, but of the shape of the machine. Readers can hold complexity. They can accept that someone is paid and still believes what they say. What they cannot do is assess a recommendation whose conditions are hidden from them.

Because books are not quite like other products. People do not simply buy them. They carry them about, lend them, press them on friends, build a self out of them, and remember where they were sitting when they finished. That intimacy is exactly what makes the channel so commercially potent — and exactly what is spent when it is used carelessly.

So the most valuable thing a book creator holds is not a camera, a follower count or a publisher’s telephone number. It is the belief that when they say I loved this, they mean it. Sponsorship will not decide the future of BookTok; creators will keep accepting it, as they should. What will decide it is whether we still believe them afterwards.