As to "breast cancer," that link "a)" I gave you in my last post shows filters properly filter out the right stuff and allow the breast cancer research through. And honestly, it's peculiar how everyone, not just here, uses breast cancer as the example to use, curiously, just like the ALA. The ALA continues to say filters don't work and filter out breast cancer. They know better by now so that's not a mere oversight -- it's misinformation.
Use prostate or cervical cancer if you prefer. Use elephantitus if you want something that could both be the subject of serious research as well as unmeasurable entertainment for teens. Lets not even start about the latin word for 'with'.
Again the link a) is non responsive regarding the nature of the filtering technology and is data put up by those with an axe to grind. I don't believe them (I believe they're deluded). They can put up their software for the world to test. Untill they do I'm unconvinced.