www.michielgaasterland.com/seo/what-is-the-difference-betwee...

PR is the grade your web page gets from headmaster Google. SERP is the position of the page in Google’s search results based on certain keywords.

moz.com/search-ranking-factors

Every two years, Moz surveys the opinions of dozens of the world's brightest search marketers and runs correlation studies to better understand the workings of search engine algorithms. Here are the results for 2015.

www.youtube.com/watch?v=phv3kWW2cu4

State Of The SERPS Grey Hat SEO