Structuring the Data Streaming

PageRank Explained

At the heart of Google software is a system called PageRank, which basically gives every site on the Internet a rank from 0-10. So how is this calculated? Well, the page rank of your site is determined by the links to your web site. Each time somebody adds a link to your web site, Google interprets this as a vote for your site. The more links you have to your site, the more votes you get.

But Google also looks a little deeper than just sheer volume of links, and analyses the importance of the web site that has cast a vote for your site. Sites that Google determines are important are those with a higher PageRank. So a link to you from a site with a PageRank of 6 is better than a link from a site with a PageRank of 3. In fact, 1 link from a site with a PageRank of 6 is better than 10 links from PageRank 3 sites[1].

Still following? Almost there. When Google is determining how important the link to your site is, it also checks how many other links are on the web page. Take our PageRank 6 page for example. If it has 1000 links on a page, with your site being one of them, Google will determine that the site's 'vote' for your web site is only worth 1/1000 of the PageRank 6 value. If there were only 3 other links on that page their 'vote' for your site will be interpreted by Google as much more important.

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