For adults, we know and we are responsible for what we do in the net. But people have different sets of minds. I cant speak for them, but I can only wish that we all be responsible in what we upload and download in the net. Regarding the children, of course they shouldn't be allowed to use the net without our supervision. This is rather challenging because we cant be with them 24 hours a day. But whatever they do, let us not stop educating them of things about life, about the good and bad effects of being too lenient in the use of the net. They will one day realize that. They may explore maybe, but the one we taught them would always nag their minds that there are certain precautions that must be taken while surfing the net.