What is the Google Pagerank?
Google Pagerank can mean two things. It is the Pagerank on the Google toolbar and the heart of the Google search engine.
Web users can install the Google Toolbar onto their browser and this includes a Pagerank monitor. When visiting a website, the Pagerank monitor displays a score out of 10 and this indicates the importance of that webpage. This is no longer considered to be an accurate reflection of the actual importance and is more of a Google marketing tool.
Pagerank also refers to the technology that Google uses to calculate search rankings. Pagerank was developed by Google founders Larry Page and Sergey Brin at Stanford University as part of their research project in 1995. The Pagerank system passes vital information returned from crawlers into complex algorithms to calculate the sites importance. This includes information about links between pages on websites and how relevant these links are. Each link is a “vote” for the page/site that is being linked to. For example, if page A links to page B, page B has received a “vote” from page A. Google checks how relevant page A is to page B and how relevant it is to the search query. It also estimates how important page A is by calculating its Pagerank. This is used to establish a weighting for the vote in page B.
Google uses its complex Pagerank system in conjunction with text matching technology to determine the rankings of webpages for particular search terms. So in order to achieve a high rank for a keyword or phrase, it is important to have quality, relevant content as well as a high number of relevant inbound links from important websites and webpages. Internal links (links within a website) are also important as these also count towards the Pagerank. Although they are not as important as external links (links from other websites).