Google PageRank™ (PR) was the 1-10 measure that Google gave to websites, but Google has now hidden that for some years. However it is clear to the entire world that Google continues to rank and add different values to different pages. How do you think Google search results work? The most relevant, valuable page for any enquiry is served at the top of results, and then down the page in order of Google's aesment of your website.
This page was a PR2. Getting a link from a page ranked site helped your website search better. The more PR links you had, the better your site would search on Google. It was kind of like voting at an election. The more votes you had for a word like van shelving, the better the value of the vote, the higher your website will display in search results.
Links remain crucially important and form around 50% of your website optimisation. The other 50% is your website itself. It is the synergy of onsite and offite optimisation that will get your website on to page 1. Contact Jacko.