We have updated the MultiPageRank site to provide MozRank, Moz PageAuthority, Google PageRank and Alexa results now. In one simple request you can retrieve all these measures for multiple domains.
Google provided an opening in the market to serve users interested in page authority/popularity when they slowed sharing the updates to public Google page rank. Moz has filled that role extremely well. For a year or two Moz results have been much more useful than Google’s. We have finally added Moz results to our results page.
MozRank is closest to Google page rank to measure raw link authority to the page; as with Google page rank the link weight is based on the rank of the page providing a link. So 1 link on the home page of some very popular site would provide more rank to the linked page than thousands from low quality pages.
Moz page authority is enhanced with many extra factors to try and provide a better estimation of search result “authority.” Moz calculates it based off data from the Mozscape web index and includes link counts, MozRank, MozTrust, and dozens of other factors.
We also continue to include Alexa data which does have significant issues with reliability but it is of some interest so we include it. Alexa uses their data (largely toolbar user based) to rank websites by total visitors/visits (a combination). There data is biased with SEO sites in particular getting a big boost as users using those sites are often using a toolbar that shares data with Alexa and they visit lots of SEO related sites.
We have had some issues (largely very slow response times for the results page) providing the additional Moz data but I believe things are working well now. Still I have the old results visible using www.multipagerank.com. The new results are found on multipagerank.com. I made split when we first had issues as we worked on them. I will likely eliminate the old results page in the next couple weeks if everything continues to go well.