Google Pagerank essentially a score for your website out of 10 based on the importance of Google thinks that you are part of the overall architecture of the Web searchery.
Of importance, means that Google how many people link to your page, the pages most, the more relevant your page will be. But that's not quite what it is not good to have thousands of links to your page if they are not important pages themselves, in turn, is determined by the quality of pages linking to you.
Google says that the role consists of more than 500 million variables and 2 million terms, but Wikipedia is an algorithm of "simplified" which I think is nothing, attention, math was never my forte.
In short, quality links = better positioning of the page. As with many SEO techniques, Google Page Rank is not enough to guarantee a high ranking, but it will help, it is likely that pages with lower page rank will appear above yours, if you managed to break other areas of SEO.
Rest assured, however, if you have a number of quality link building services to your page, SERP (search engine results page) ranking and improve your page rank, not a problem in the world of SEO.
Realistically, as a small business owner, you probably should aim for a score of 2 or 3 times that you are the site is provided for in Google. High scores of 7 or more to be reserved for big players like Microsoft, Apple and Google themselves (Google home page gets 10)
