In 1998, two graduate students at Stanford University, Larry Page and Sergey Brin, developed "Backrub", a search engine that relied on a mathematical algorithm to rate the prominence of web pages. The number calculated by the algorithm, PageRank, is a function of the quantity and strength of inbound links. PageRank estimates the likelihood that a given page will be reached by a web user who randomly surfs the web, and follows links from one page to another. In effect, this means that some links are stronger than others, as a higher PageRank page is more likely to be reached by the random web surfer.
All aboard! I brought my clients over to SE Ranking. I thought I would have never left my old KW tracking software, but guess what? I outgrew it. To all marketing agencies, start selling content marketing packages like we have. Record keyword rankings & monitor backlinks within one software. Nice keyword suggestion tool too. Thanks SE Ranking. Francisco Meza from planetmarketing.com