To begin, save yourself some time and aggravation, plus gain valuable information
for every page you look at from now on by getting yourself the Google
Toolbar. If you've been reading our site for long, you are probably aware
that we find Google to be the only search engine worth using. To a lesser extent,
it is the most important search engine to optimize for. Do well in Google, and
the rest will (almost always) follow. The Google Toolbar will tell you the Google
Page Rank of every page that you look at.
Google Page Rank is a technology created by Google to assign a value or importance to every web page on the internet. To arrive at this value, one of the most important tools google uses measures the links to your website found on other web pages. Each of these sites in essence counts as a 'vote' for your site. 'Votes' from sites with a higher page rank are weighed more than votes from sites with a low page rank or none at all. So acquiring links to your site on other websites is an important strategy for achieving a high page rank and ultimately a higher search return ranking with Google.
More about Google Page Rank can be learned Here