This looks handy.
QUICK GUIDE TO EVALUATING WEBSITES
H809 has as considering the validity of research papers. I'm translating this cautious approach not only to papers, but also to books and websites. This matters. Do they know their subject? Was the research creditable? Do the references stack up? Where, what, under whom and how did the study and come to these concusions? What else have they written? What do others think (reviews in reputable publications can offer an invaluable perspective on some of the popular authors who capture the public's imagination but are often academical spurious).