Indeed what proxies2u said is true. High
PR doesnt boost your SERPs rankings, SERPs rankings factors are considered by the kind of backlinks you get to your site. Are they backlinks from relevant content, same niche? Are they backlinks from high
PR authority sites like
PR 6-10. These are some of the factors that will boost Search Engine rankings for off-page optimization.
PR is only a rough guage on how much
PR juice you are getting from
PR sites. If your site is a car site and you get a backlink from another
PR 5 football website, chances are you are gonna get between
PR 3 but it probably arent gonna help you improve much in the SERPs compared to another
PR 2 car website that has more relevant backlinks to it though it has lesser
PR, it will rank above your site in this case.