Google assigns a value to every web-page in Google index, based on a complex formula. When Google performs a search, it displays the results based on algorithm, which includes the PageRank value. The higher is the Google PageRank of your site, the more are your chances of getting a top listing, when someone performs a search using keywords from your site.

      The PageRank system was developed by Larry Page (The name Pagerank comes from his surname) and Sergey Brin at Stanford University, while researching on a new search engine project. Page and Brin founded Google Inc. soon after.

      To see someone’s PageRank is a piece of cake – simply download install Google toolbar (which is pretty simple), choosing ‘advanced’ option, and you can see the PageRank of any site on the toolbar.

      How PageRank is calculated is an extremely complicated thing to understand, involving very complex formulas, and is best understood by mathematicians. I shall try to make it as simple as I can.

PRA = 1-d + dPRt1/Ct1 + ... + PRtn/Ctn

Google PageRank is based on the above formula, which explained in simple English means – The more links that point to your site, the higher is your rank. The higher is the Google PageRank of the sites, pointing (linking) to your site, the higher will be your Google PageRank. For example, if a site with PageRank 10, and 5 other sites point (link) to your site it will give you more value, than a site with PageRank 20, and 100 other sites pointing to your site. Besides, your PageRank also increases if other sites with content similar to your site point to your site. Thus you see, the formula has a lot of variables, and complications.

      Your Google PageRank can be increased by:

(a) increasing the number of incoming links (links pointing to your site). Your PageRank falls by the increasing number of outgoing links from your site.

(b) Again, getting incoming links to your site from good sites with high PageRank, will increase your Google PageRank as well.

(c) Another factor that can increase your PageRank is the number of pages of your site. Higher number of  pages increases your PageRank.

(d) Your PageRank also increases if other sites with similar webcontent point to your site.

Your Google PageRank is supposed to change once every month, because Google updates rankings once a month.