Good grief r-ando the naivety you're demonstrating here is astounding. You're talking a language like pornography is a black and white concept that's as clearly identified as the difference between animal, mineral and vegetable. Before you even start thinking about the "Darktor" as a place that would be "free of pornography", hence would potentially avoid paedophiles wanting to use it you would have to enter the enormously complex sociological debate "What is pornography?"
I am as unenthused by the world's pornography epidemic as most thinking people are, but I also know that the very second you start making moral judgements on behalf of other people you have entered the realm of censorship and big-brother monitoring, THE VERY ESSENCE OF WHAT THIS IS ALL ABOUT AVOIDING!
The "Darktor" is about complete and absolute privacy without some central authority deciding what is and isn't good for us. Your judgement around "pornography" and it being "negative" has absolutely no place within what's trying to be achieved here.
If what you're stating would come to pass, who decides what's pornography? Are you going to put forward a complex categorisation process to determine what is and what isn't pornography? I think you're naive in the extreme and this is just a silly notion.
Unfortunately, RenegadeMan is absolutely correct. Don't get me wrong, it pains me to see young women misuse their bodies for money and drugs, etc.... and the thought of what has and will be done to children just makes me want to barf or go on a killing spree. BUT, that slippery slope is the most dangerous path humanity is constantly being tempted with. Aside from the question of who gets to make these moral decisions, we would also be opening ourselves up to being responsible for these things getting to the masses if they slipped through. I hope you can understand this.