MozRank is one of the most popular and dependable metrics if you want to measure the authority of a domain or web page. Many webmasters and SEO experts are using MozRank as a point of reference for optimizing search engines. It was created by Moz, a company that provides tools for search engine optimization.
MozRank of web pages is based on the similar pages on the web that are linked to them as well as the MozRank of those pages with links. This would also mean that if the MozRank of the linking pages is high, there is a greater chance that the MozRank of the receiving page of those links will be high too.