Back in 2007, when Bing was named Live Search, Microsoft introduced their flavor of Google PageRank and cleverly named it "Page Score." If you verify your site with Bing Webmaster Tools at bing.com/webmaster, you should be able to see your Page Score value, X out of 5 green bars.
This site has 5 green bars for the domain and our top five pages:
But what does "Page Score" actually mean? A Bing Forum thread asked that question and a Bing representative replies saying:
It is a rough indication of how we view your site pages. Note that this score is only relevent to your site and does not track well in our index.
I looked up what the help section of webmaster tools says and it explains page score as:
Provides a measurement of how authoritative Bing views your webpage to be, with five green boxes being the highest rating and five empty boxes being the lowest. This is based on many of the same factors Bing uses to determine static rank, but isn't directly comparable.
Forum discussion at Bing Forum.



Comments:
Jessica Griffin
08/20/2009 10:15 am
Does this page score help improve traffic to your website in anyway? Isn't that the main objective of having tools like this in the first place?
No Name
09/07/2009 04:46 am
All of my sites seem to either have a page score of 5 or a page score of 1 without much in between.
No Name
09/30/2009 11:35 am
Is there a pagescore checker without having to sign in webmaster tools... Will this link help my pagescore like pagerank? And wtf is going with the pagerank update already.... Waves Fist at google.. pr update is late :O
No Name
12/02/2009 11:22 am
Where can I find tips to improve my page score? Also page score of 0 and 1 - does that mean I need to make changes to the page?
Damien
04/16/2010 12:41 pm
Well i have a pr of 2 (google) but for bing i have 5 green bars on every single page.