I tend to fall on the side of Manic_Skafe and Ustwo on this issue.
It would seem as if it's being purported that kids were not engaging in inappropriate sexual activities before the internet and digital cameras. I can assure you, we were.
And no one 'failed me.' There are as many stories out there as there are photographs. Some kids have good parents, some kids don't, some are manipulated into it, some just like it, some do it for boyfriends, some do it for money, some post the pictures themselves, some are posted without their knowledge.
To blame it all on the parents, then one should logically blame every wrong or inappropriate thing that teenagers have ever done on bad parents. Including drinking. Anyone here drink before you were of age? Do you blame your parents? Do you blame your parents for smoking pot? Looking at Hustler magazine? Swearing? Driving fast? Spitting on the sidewalk?
Parents can only reasonably supervise their children so much. And I don't think denying them private internet access, just in case they take nude pictures of themselves, is the answer. In fact, I don't think there is an answer and there never has been.