But the existence of this community is significant and troubling, experts said, because it reinforces beliefs that, when acted upon, are criminal. Repeatedly in these conversations, pedophiles said the discussions had helped them accept their attractions and had even allowed them to have sex with a child without guilt.
Indeed, law enforcement officials say that the refrain of justification from online conversations is frequently voiced by adults arrested for molestation, raising concern that such conversations may lower pedophiles' willingness to resist their temptation.
"It is rationalization that allows them to avoid admitting that their desires are harmful and illegal," said Bill Walsh, a former commander of the Crimes Against Children Unit for the Dallas Police Department, who founded the most prominent annual national conference on the issue. "That can allow them to take that final step and cross over from fantasy into real-world offenses."
Still, in their conversations, some pedophiles often maintain that the discussion sites are little more than support groups. They condemn violent child rapists and lament that they are often equated with such criminals. Many see themselves as spiritually connected to children and say that sexual contact is irrelevant. Yet the pedophiles consistently return to discussions justifying sex with minors and child pornography.
Many of these adults described concepts of children that veered into the fantastical — for example, at times depicting themselves as victims of predatory minors. A little girl in a skirt reveals her underwear by doing a cartwheel; a boy in a bathing suit sits on a bench with his legs spread apart; a child playfully jumps on a man's back—all of these ordinary events were portrayed as sexual come-ons.
"It really is like going through the rabbit hole, with this entire alternative reality," said Philip Jenkins, a professor of religious studies at Pennsylvania State University who wrote "Beyond Tolerance," a groundbreaking 2001 book about Internet child pornography.
The conversations also demonstrated technological acumen, with frequent discussions about ways to ensure online anonymity and to encrypt images. That underscores a challenge faced by the authorities who hope to combat online child exploitation with technology. For example, in June, Internet service providers announced plans for an alliance that will use new technologies to locate child pornography traders.
Pedophiles were undaunted. Within hours of the announcement, their discussion rooms were filled with advice on how to continue swapping illegal images while avoiding detection—months before the new technologies were to be in full operation.