The Smashwords Taboo Categories, and Where They Live Now

Smashwords did something no other mainstream-adjacent store ever bothered to: it took taboo erotica seriously enough to organize it. While Amazon was busy pretending its adult catalog didn't exist, Smashwords built an actual certification system — a way for authors to self-label exactly which taboo elements a book contained, so readers could find precisely what they wanted and avoid what they didn't. For readers of the harder genres, it was the closest thing to a real card catalog the space ever had.

Then Draft2Digital acquired Smashwords, the long-cited policy pages started getting retired, and the careful map everyone relied on got fuzzy. If you used that system to find what you read, here's what the categories were, what actually changed, and where each of these genres lives now that the reference everyone bookmarked has moved.

How the Smashwords system actually worked

The genius of the Smashwords approach was granularity. Rather than lumping all adult content into one nervous "erotica" bucket the way Amazon does, Smashwords introduced an Erotic Fiction Certification System that asked authors to self-certify the presence or absence of specific taboo facets. That let the store — and its retail and library partners — know exactly what was inside a book, which in turn let them carry material with confidence that vaguer systems couldn't.

This is why Smashwords could be the most permissive store in the business without being reckless: the certification meant nothing was a surprise. A partner that didn't want a given category could filter it out cleanly; a reader who wanted it could find it precisely. The labeling did the work that lets a platform carry transgressive content responsibly. You can still read the policy framing in the Smashwords terms of service, though the detailed classification page itself has been retired.

The permitted taboo categories

Broadly, the categories Smashwords carried — the ones that made it the destination for readers the mainstream stores failed — covered the range of adult transgressive fiction: the pseudo-incest and step-relation genres that Amazon dungeons or bans, the various dubious-consent and noncon dark-erotica genres, the harder fetish categories, and the specific niche categories that no general retailer would touch but that have devoted readerships. These were carried as adult fiction between consenting adults, labeled clearly so everyone knew what they were getting.

The thing that made Smashwords special wasn't any single category — it was that the system named them. A reader could go looking for a specific taboo genre and actually find it, sorted and labeled, instead of guessing at coded keywords the way Amazon's dungeon forces you to. For the genres covered in our companion guides — the noncon and dubcon material in Noncon and Dubcon Erotica: A Reader's Guide, and the specific niche category in Where to Read Bestiality Erotica After Smashwords — Smashwords was, for years, simply the place.

The line Smashwords never crossed

It's essential to be clear about the floor, because it's the thing that made the permissiveness trustworthy rather than reckless. Smashwords carried a lot, but it always held a hard, non-negotiable line on the categories that are forbidden everywhere for cause: underage content in any form, snuff, scat, necrophilia, and — since a processor backlash years ago — rape presented purely to titillate without any narrative frame. These were never permitted, and the certification system existed in part to make that floor enforceable rather than aspirational.

This is the distinction that matters and that the mainstream stores deliberately blur: there is adult taboo fiction between consenting adults, which is legal and has devoted readers, and there is the genuinely prohibited material, which no legitimate platform carries. Smashwords' whole model worked because it drew that line sharply — everything adult and consensual was welcome and labeled; everything across the real line was forbidden, full stop. A platform that can't articulate that difference can't be trusted with either side of it.

What the merger actually changed

Here's the honest accounting of the post-acquisition situation.

Officially, very little changed. Draft2Digital adopted Smashwords' erotica policies wholesale, including the certification system, which was even extended to D2D's own authors. The stated position is that the policies haven't changed in years and aren't expected to. By the letter, the permitted categories remain permitted.

In practice, two things shifted. The detailed classification reference page — the one readers and authors bookmarked to know exactly where a category stood — was retired as of 2026 and now points to a Draft2Digital knowledge base, so the clearest map got harder to read. And the merger introduced a structural uncertainty that policy language can't dissolve: the most permissive store in the business is now a unit inside a larger distributor, and the readers who depend on that permissiveness have learned to plan for the day a larger company decides the hardest categories aren't worth the risk. Nothing's been removed. But "nothing's been removed yet" is a thinner reassurance than readers of these genres would like.

Where these categories live now

The throughline of all of this is that depending on a single permissive store — gated behind opt-in filters, mid-merger, subject to partners and processors — was always a fragile way to read genres the rest of the industry rejects. The durable answer is a platform built specifically for adult fiction, where these categories are normal catalog rather than carefully-labeled exceptions inside a cautious general store.

On a dedicated platform like Maliven, the taboo genres Smashwords pioneered the labeling for are simply part of the catalog — browsable, searchable, present, without the homepage suppression or the multi-step filter ritual or the looming question of whether the next corporate harmonization quietly drops a category. The platform carries this material because carrying it is the point, not because it's a permissive exception it's nervously willing to tolerate. And the genuine floor — the underage line and the rest of the universally-prohibited categories — is held exactly as sharply, because that floor is what makes carrying everything else responsible rather than reckless.

Why a labeling system was always the right idea

It's worth pausing on what Smashwords got right, because the lesson outlives the store. Most platforms handle taboo erotica through suppression — hide it, bury it, ban it, pretend it's not there. Smashwords handled it through information: tell everyone exactly what's inside, and let readers, partners, and the store itself make informed choices. That's a fundamentally more honest and more functional approach, and it's why Smashwords could carry what others wouldn't without the whole thing collapsing into chaos.

The principle is simple: clarity enables permissiveness. When you know precisely what a book contains, you can carry a wide range responsibly, because nothing is a surprise and the genuinely-prohibited material has nowhere to hide. Vagueness is what forces the nervous, suppress-everything posture you see at the general stores — they bury adult content broadly because they can't or won't categorize it precisely, so they treat the whole category as one undifferentiated risk.

This is why a dedicated adult platform can pick up where Smashwords' system left off so naturally. When the entire catalog is adult fiction organized by category, the labeling isn't a bolt-on certification layer — it's just how the store is built. The genres are named because naming them is how you shelve a bookstore. The precision Smashwords had to engineer as a special system is, on a purpose-built platform, simply the native structure. Readers get the same "I know exactly what I'm getting" confidence without the opt-in wall that Smashwords put in front of it, and the platform gets the same enforceable floor that made the permissiveness trustworthy in the first place.

What this means for you as a reader

If you used the Smashwords certification labels to navigate, the practical question is how to keep finding what you read without the reference page you relied on. A few things worth knowing:

The labeling instinct was right; the dependency was the risk. What made Smashwords good was that it told you exactly what was inside a book before you bought it. That's a feature worth keeping — you should always know what you're getting in genres this specific. The problem was never the labels; it was relying on a single general store, mid-merger, to keep offering them. The fix isn't abandoning clear categorization, it's finding it somewhere structurally stable.

A dedicated platform does the labeling job natively. On a platform built for adult fiction, the genres aren't certified exceptions bolted onto a mainstream catalog — they're the organizing principle of the catalog itself. You browse by category the way you'd browse any bookstore by section, because the categories aren't liabilities to be flagged, they're just how the store is arranged. That's the same precision Smashwords offered, without the opt-in wall in front of it.

You don't lose your Smashwords purchases by switching. Moving where you buy and discover new books doesn't touch what you already own. So there's no migration cost to trying a dedicated platform — you keep what you have and simply start finding new reads somewhere the categories aren't gated or uncertain.

Trust the floor before you trust the catalog. The thing to verify on any new platform isn't whether it carries your genre — plenty will chase that traffic — but whether it draws the hard line sharply. A platform that's clear and firm about the universally-prohibited categories is one whose permissiveness on the legal genres you can actually rely on. Vagueness about the floor is the warning sign, every time.

The genres didn't go anywhere. The careful map Smashwords drew just moved, and the lesson most longtime readers took from the merger is that the map should never have lived inside a store that could be acquired in the first place.

A few questions people actually ask

What were the Smashwords taboo categories? Smashwords' certification system let authors label specific taboo facets so readers could find adult transgressive genres precisely — the pseudo-incest and step-relation genres, dubcon and noncon dark erotica, harder fetish categories, and specific niches no general store carries. All as adult fiction between consenting adults, clearly labeled.

Did the Draft2Digital merger change what's allowed on Smashwords? Officially no — D2D adopted Smashwords' policies wholesale. But the detailed classification page was retired in favor of a D2D knowledge base, and the merger created uncertainty about the long-term future of the hardest categories even though nothing has formally changed.

What did Smashwords never allow? The universally-prohibited categories: underage content in any form, snuff, scat, necrophilia, and rape presented purely to titillate. These were always forbidden, and the certification system helped enforce that floor.

Where do these genres live now that the Smashwords map moved? On dedicated adult fiction platforms where the taboo genres are normal browsable catalog rather than gated exceptions inside a general store — without the opt-in friction or the merger uncertainty.

The short version

Smashwords deserves real credit: it built the most serious taboo-classification system the space ever had, and for years it was the place readers of these genres could actually find what they wanted, labeled and sorted. The merger didn't burn that down — but it retired the map, added corporate uncertainty, and reminded everyone how fragile a single permissive store always was.

The stable home for these genres now is a platform built for them, where the categories are catalog rather than carefully-tolerated exceptions, the floor is held as sharply as the permissiveness is offered, and no merger looms over whether your genre survives the year. That's where they live now.