This report is committed to the best – those free SEO tools that I use frequently and give me that warm, fuzzy feeling. So don’t stick to what they say blindly, as mostly it is just that the tools do not present a correct picture of concerns. PA is the custom metric every Search engine optimization vendor now calculates independently to gauge and price (again, on a scale of 100) the link structure and authoritative strength of an person page on any provided domain. The terms Search engine marketing authorities normally begin with are web page authority (PA) and domain authority (DA). The more potent platforms can sport deeper analytics on paid marketing and spend-per-click (PPC) Seo as properly.