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Google page ranking explanation
Introduction
Google runs on a unique combination of advanced hardware and
software. The speed users experience can be attributed in part to the
efficiency of our search algorithm and partly to the thousands of low
cost PC's they have networked together to create a super-fast search engine.
The heart of their software is PageRank,
a system for ranking web pages. And while they have dozens of engineers
working to improve every aspect of Google on a daily basis, PageRank
continues to provide the basis for all of their web search tools.
PageRank Explained
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 the web users query. So, Google combines PageRank
with sophisticated text-matching techniques to find pages that are both
important and relevant to a specifc 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 a query.
Integrity
Google's complex, automated methods make human tampering with our
results extremely difficult. And though they do run relevant ads above and
next to the results, Google does not sell placement within the results
themselves (i.e., no one can buy a higher PageRank). A Google search is
an easy, honest and objective way to find high-quality websites with
information relevant to your search.
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