Two Major Ways Web Site Operators Cheat to Raise Their Google Page-Ranks

 The White-on-White Text Relevance-Ranking Cheat Demo: Though obscure at first, this one will soon seem obvious once you remember that Google's algorithm rewards pages that contain higher frequencies of words deemed relevant to a user's search terms.  Pages can "contain" text in many forms.  Let's say you asked Google to search for the text of Chaucer's "General Prologue" of the Canterbury Tales and you were sent to the page linked to the "White-on-White" hyperlink above.  Why in heaven's name did Google think it was "relevant"?  Go to the page, then right-click and drag your mouse over it.  The Google spider, looking for "relevant words," sees what you did not see at first.  Why? 

 "Matryoshka" Strategies: This one I have to explain by a metaphor.  Google rewards web pages that are referred to by other "high-quality" web pages.  Those pages' quality-ranks are determined by, you guessed it, how many "high-quality" web pages refer to them.  A web page operator who wants to fool the Google algorithm might "nest" web sites within web sites that are, themselves, nested within web sites, all referring to each other and all filled with acres of "white-on-white" text that attempts to simulate relevant content while vending various profitable online products or total scams.  The term, "Matryoshka," refers to the Russian nesting dolls, and to Russian chess and military strategy, which is still notorious for hiding one plan within another within another, ad infinitum.