Comment by whakim

I really don't think that's true. For example, page 29 of your link describes "Lowest Quality Content." Most of the search results that the author rated as spammy or scammy clearly fit these guidelines, which means that either (1) the raters aren't knowledgeable enough about the subject matter to determine that the website they're rating is harmful or misleading; or (2) the raters are rating these sites correctly, but it still isn't having the desired effect.