Bing’s Page Score
Almost all web owners really want their particular web sites to position highly in the major search engines. The major search engines use several 100 criteria to help all of them decide the way to position a site and they are extremely secretive in regards to the algorithms which they do this. Site owners consider each minor amount of information that they can manage to get thier hands onto help ascertain the importance of any webpage and if that details may explain the rankings. They will look at things like the Google PR or page rank of a website. There is also items like Bing’s Page Score plus more recently SEOMoz have published the MOZRank and MOZTrust ratings.