PageRank relies on the uniquely democratic nature of the web by using its vast link structure as an indicator of an individual
page's value. In essence, Google interprets a link from page A to page B as a vote, by page A, for page B. But, Google looks
at more than the sheer volume of votes, or links a page receives; it also analyzes the page that casts the vote. Votes cast
by pages that are themselves "important" weigh more heavily and help to make other pages "important."
Important, high-quality sites receive a higher PageRank, which Google remembers each time it conducts a search. Of course,
important pages mean nothing to you if they don't match your query. So, Google combines PageRank with sophisticated text-matching
techniques to find pages that are both important and relevant to your search. Google goes far beyond the number of times a
term appears on a page and examines all aspects of the page's content (and the content of the pages linking to it) to determine
if it's a good match for your query.