Boxee has slowly but surely been building out the adult content offered through its streaming service, and now there is one more in the mix: Pornhub (NSFW link) — which informally calls itself the YouTube for porn, offering a mix of user-generated and more professional content — is now also coming to the service.

But although adult material has long been one of the dead-certs in the world of paid content, it’s still a competitive business and therefore ripe for disruption. So unlike other recent adult additions to Boxee like Fyre, Pornhub is making its debut ad-free and free to watch. It claims that it is the first, official free adult app on Boxee to do so.

This is also Pornhub’s first move to making its content available on TVs, Corey Price, VP of new business development, tells me.

This is not to say that Pornhub’s content will remain free forever. Price says that its mobile web site also started in a similar vein; after it built up its audience, it began to incorporate ads. The Boxee service will likely follow a similar pattern. “The money always comes later,” Price says.

The bulk of Pornhub’s viewing at the moment is on its own web site. That brings in 100 million page views per day, with around 25 million visitors and 3 billion page views per month.

But Price says that they have started to see a gradual migration to watching Pornhub away from a computer. That comes partly from its mobile presence (60 million views per month) as well as the fact that you can already watch Pornhub on TVs via any console with a browser.

The move to TV screens via a dedicated app will mean an improved user experience for those watching on those bigger screens, plus more functionality: the remote and keyboard from the Boxee system, he says, “work perfectly” with this app — unlike the browsing experiences.

Similar to other adult apps on Boxee, this content will be filtered and hidden behind a wall to ensure that children — and anyone else a Boxee owner chooses — will not be able to access it.

And as for next steps, Price says that Pornhub is eying up Roku and Google TV as its next two TV platforms, as well as building dedicated apps for some of its other brands such as YouPorn. In other words, a big move for Pornub to the TV hub.