This is not how material is currently shared in practice, other than maybe on OFFsystem. There are most likely comment sections on all the distribution mechanisms other than Limewire style P2P networks. It is not a site per-se, it is a network. The network would need to host various things other than CP. If it is PIR, nobody will be able to differentiate the interest in CP from the interest in other things on the network. There could be zero interest in the CP, or it could be all CP, nobody can know. Likewise, monitoring traffic will not tell you what is a client is requesting, it could be CP or it could be anything else on the network. Here is the most basic PIR system, and the only way to do it with a single server. There is a website that hosts images. Anyone can upload images. To download any image, you need to download all of the images. If you want image of an apple, you need to download the entire archive of images and then filter it for apples. Now nobody can know which image you were interested in, thus the demand for certain images is perfectly concealed. This is an extremely basic example of PIR but it shows that it is possible and maybe gives you a better idea of what it is. You can do a lot with PIR, don't be fooled by the simplicity of the example I gave. It is actually kind of ironic that, in the extremely basic PIR example I gave above (everyone downloads everything, then filters it for what they are interested in), you perfectly hide the demand for CP by having a lot more people downloading it than actually want it. So download CP to combat child sex abuse I guess. I just proved that, if demand for CP leads to production, less production will happen if more people download CP . Apples and oranges man, we were talking about if downloading and viewing CP should be illegal, not if sharing CP outside of a PIR system should be illegal. Snuff and hurtcore should also be legal to possess and view. We draw the line no where. There is no line. No picture or video should be illegal to view. There is also moral outrage over drug use as far as the majority goes, is that good enough of a reason to keep drugs illegal? Yes it needs to be about legalizing viewing of CP across the board. I am not saying "Hm, some CP isn't that bad at all, and these teenagers who took pictures of themselves and uploaded them to the internet are not sexually abused when people view the pictures", I am saying "Even the worst most disgusting sort of CP imaginable should not be illegal to view, because it is a fucking series of pixels, and has absolutely no effect whatsoever on anyone other than the person viewing it, and censorship is bad in all of its forms". First of all, the age of consent to make pornography should be lowered to such that pictures of naked 16 year olds are not even illegal to produce, and for two, no, censorship is bad.