
Page rank shows the regularity of the author in updating the site. It also shows how many other sites are linking back to this site. A link to a webpage from a higher pagerank increases the pagerank of the webpage. Google uses a complex algorithm to calculate the pagerank of very single webpage. Pagerank of a site is affected by many factors like validation of all the links, images (following all the conventions of World Wide Web while designing the webpages). A constantly updated website will have a page rank of 4 in a year or two. Google always interests in original content than some copy-pasted content and this adversely affects your page rank in longer time. You can check pagerank of a site using google toolbar or from other sites like page rank checker.