What is Page Rank?
PageRank is also displayed on the toolbar of your browser if you’ve installed the Google toolbar ( from http://toolbar.google.com/). PR (green color line) is as show below in google toolbar.
Page rank is as show below on Google toolbar. But the Toolbar PageRank only goes from 0 – 10 and seems to be something like a logarithmic scale:
Toolbar PageRank | Real PageRank |
0 | 0 - 10 |
1 | 100 - 1,000 |
2 | 1,000 - 10,000 |
3 | 10,000 - 100,000 |
4 | and so on... |
How PR calculated?
Only Inbound links are the factor to calculate PR of any page. Where inbound link means links within that site and coming from outside the side; linking to that page. Here below is equation to calculate the PR of page “A”
PR(A) = (1-d) + d(PR(t1)/C(t1) + ... + PR(tn)/C(tn))
In the equation 't1 - tn' are pages linking to page A, 'C' is the number of outbound links that a page has and 'd' is a damping factor, usually set to 0.85.