At least 12 per cent of all websites contain porn. That’s a worrying statistic – but even worse is the way online pornography pulls its consumers towards graphic and violent images that were once the preserve of isolated hardcore users. The addictive pattern is unmistakable. The internet bombards people with so many images that their deepest kinks and obsessions are stimulated. Many porn addicts become as turned on by the searching for and collecting of videos as they do by any physical sexual gratification. And, with the arrival of computer tablets, an internet porn habit is easier than ever to hide. That’s a deadly problem for society – and especially for children and young adults who are exposed to darkly addictive porn at precisely the moment when their sexual self-esteem is most fragile.