This post comes from Search Engine Land. ” The documents are used by Google Quality Raters to aid them in classifying queries, measuring relevancy, and rating the search results. To do so, the Quality Rater must understand how Google works and this document has a bunch of that. Let me pull out some of those details in easy to read bullet points.” You will learn from this article the three query types that Googles uses to classify queries. They are; Navigational, informational and transcational. Click here to read the rest of this article.