In Chapter 4, Orwell discusses the underbelly of the Ministry of Truth, which deals in propaganda and smut for the working class:
And the Ministry had not only to supply the multifarious needs of the party, but also to repeat the whole operation at a lower level for the benefit of the proletariat. There was a whole chain of separate departments dealing with pro- letarian literature, music, drama, and entertainment generally. Here were produced rubbishy newspapers containing almost nothing except sport, crime and astrology, sensational five-cent novelettes, films oozing with sex, and sentimental songs which were composed entirely by mechanical means on a special kind of kaleidoscope known as a versificator. There was even a whole sub-section — Pornosec, it was called in Newspeak — engaged in producing the lowest kind of pornography, which was sent out in sealed packets and which no Party member, other than those who worked on it, was permitted to look at.
Julia has even had some experience in dealing in this department:
She had even (an infallible mark of good reputation) been picked out to work in Pornosec, the sub-section of the Fiction Department which turned out cheap pornography for distribution among the proles. It was nicknamed Muck House by the people who worked in it, she remarked. There she had remained for a year, helping to produce booklets in sealed packets with titles like Spanking Stories or One Night in a Girls’ School, to be bought furtively by proletarian youths who were under the impression that they were buying something illegal.