Sexually explicit films opened producers and distributors to prosecution.
Processing the film was risky as was their distribution. In 1969, Denmark became the first country to abolish censorship, thereby decriminalizing pornography, which led to an explosion in investment and of commercially produced pornography.
However, it continued to be banned in other countries, and had to be smuggled in, where it was sold "under the counter" or (sometimes) shown in "members only" cinema clubs.
They present a significant challenge to the commercial pornographic film industry.
Irrespective of the legal or social view of pornography, it has been used in a number of contexts.
The film was a seminal film in the Golden Age of Porn and, according to Warhol, a major influence in the making of Last Tango in Paris, an internationally controversial erotic drama film, starring Marlon Brando, and released a few years after Blue Movie was made.