An adult dvd contains pornographic films which, in the main, are moving pictures designed to cause the veiwer to be sexually aroused. They present scenes full of of sex acts. Pornographic films came into being following soon after the advent of the movie industry over a hundred years ago. Adult movies contain material that is often refered to as porn/porno, blue movies, skin flicks and stag films. There are softcore adult dvds and hardcore adult dvds. Generally soft means films that don’t show penetration or depraved activities, but are still designed to sexually stimulate anyone who watches them. In a hardcore adult dvd almost anything goes. Since the invention of the movie camera, porn has always existed but has never been more readily available than in the present. At one time they were available only by shady means and the industry was regarded as illegal and run by mainly criminals. Porn was only available to watch in private clubs and cinemas. However, during the 70s it became partially legal and by the 80s, when videos became popular , the distribution of skin flicks was almost universally accepted. With the invention of the Internet during the nineties pornography became almost impossible to regulate and different ways of viewing entered the market. You can now buy an adult dvd, watch video on demand via internet downloads or just pay per view in real time. It is now a multi billion pound industry that has great power, with thousands of films being released each year. On top of this you have the infinate choice of genres of adult entertainment. Ranging from amateur to gonzo, gay to mature. The choices are endless. Whatever you are into, be it interracial sex or outdoor action, it will almost certainly be available to view in one form or another. The adult sex entertainment industry also takes in sex dating and the sale of sex toys and sex aids.