Rand and company over at SEOmoz have come up with a slick tool called “Page Strength SEO Tool” for determining the importance and visibility of a web page. Factors considered range from age of domain to link quantity, sources and Page Rank. Basically, it serves as an alternative to Page Rank. More importantly, it serves as a form of linkbait for SEOMoz. But that’s been true about SEO tools for quite a long time. Tools that help webmasters and marketers promote their sites offer excellent linking opportunities.
While it’s not the same thing, Aaron’s SEO for Firefox tool also offers a way to get various pieces of information on a web page.