Google has quietly dropped the infamous ‘Page Rank’ score from its Webmaster Toolkit. Google’s official line is that many web site owners thought it was the single most important thing they needed to focus on to and it isn’t. Page Rank is only updated infrequently by Google and is probably the single thing that SEO agencies will focus on improving on a site. Time for some more metrics and a whole swath of new tricks? Blessed are the SEO agencies as they will have work…