Reliability

I am also Reading "Empowering Students with Technology" by Alan November.
He discusses an experience a HS student had several years ago while researching the Holocaust. He stumbled across Prof. Arthur Butz's site (Prof @ NorthWestern U). The Professor did not deny the existence of the holocaust camps, but he explained the existence of the camps as an attempt by the German govt. to fight typhus carried by lice. He did not deny the shaving and the showers; the canisters of the gas, Zylon; and the crematorias and the death. He calmly and simply explains these details as necessary actions for the eradication of pervasive lice. The Student did not know how to read website. He was not taught the critical thinking skills of understanding the structure of the information or how to cros-reference the source. His lack of knowledge to think critically about information he read, made him a victim. (page 55 of the book)
I think I really need to compose some lessons regarding the internet sue/reliblility before I get too far into using the web for research with students. I could provide them with what I find are reliable sites for now, but then we are missing out on critial thinking.