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Pornography (often abbreviated porn) is the portrayal of sexual subject matter for the exclusive purpose of sexual arousal.(1) Pornography may be presented in a variety of media, including books, magazines, postcards, photographs, sculpture, drawing, painting, animation, sound recording, phone calls, writing, film, video, and video games. The term applies to the depiction of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease. The primary subjects of present-day pornographic depictions are pornographic models, who pose for still photographs, and pornographic actors or "porn stars", who perform in pornographic films. If dramatic skills are not involved, a performer in pornographic media may also be called a model.

 

Various groups within society have considered depictions of a sexual nature immoral, addictive, and noxious, labeling them pornographic, and attempting to have them suppressed under obscenity and other laws, with varying degrees of success. Such works have also often been subject to censorship and other legal restraints to publication, display, or possession, leading in many cases to their loss. Such grounds, and even the definition of pornography, have differed in various historical, cultural, and national contexts.(2)

 

Social attitudes towards the discussion and presentation of sexuality have become more tolerant in Western countries, and legal definitions of obscenity have become more limited, notably beginning in 1969 with Blue Movie by Andy Warhol, the first adult erotic film depicting explicit sex to receive wide theatrical release in the United States, and the subsequent Golden Age of Porn (1969-1984),(3)(4)(5) leading to an industry for the production and consumption of pornography in the latter half of the 20th century. The introduction of home video and the Internet saw a boom in the worldwide porn industry that generates billions of dollars annually. Commercialized pornography accounts for over US$2.5 billion in the United States alone,(6) including the production of various media and associated products and services. The general porn industry is between $10-$12 billion in the U.S.(7) In 2006, the world pornography revenue was 97 billion dollars.(8) This industry employs thousands of performers along with support and production staff. It is also followed by dedicated industry publications and trade groups as well as the mainstream press, private organizations (watchdog groups), government agencies, and political organizations.(9) More recently, sites such as free porn, sex porn, porn videos, VK porno, free adult videos, free porn, xnxx, free porn, pornstars porn videos, free porn videos, sexo amadores, porn videos, filme porno romanesti, filme porno, in addition to much pirated porn posted by individuals, have served as repositories for home-made or semi-professional pornography, made available free by its creators (who could be called exhibitionists). They present a significant challenge to the commercial pornographic film industry.