Page Rank is a score given to a given webpage by Google. The lowest page rank score a webpage can get is 0, the highest is 10. Page rank is based on how many quality and relevant web pages are linking to your webpage.
So, if you have a webpage about cooking, and high page rank food and recipe sites link your webpage, than your page rank should increase. It is very important that high page rank sites link to you if you want to bolster your page rank. It would be much better to have one page rank 6 website link to you as opposed to having three or four page rank 1 websites linking to you.
There are two ways to check on the page rank of your site
The simplest way to check the page rank of any webpage on the web is to download the Google Toolbar. When you download the Google toolbar, you have the option to turn page rank on. When you do this, each time you are on a webpage, it will show you the page rank score in your toolbar
Another way to check out the page rank of any page is to visit pagerankchecker.com. Simply, click on get page rank, and it will show you the given page of any webpage
Google updates their page ranking about once per month. Many webmasters pay a lot of attention to page rank as it is widely known that the higher page ranked sites have a better chance at showing up in Google's organic search results
