|
Toolbar PageRank
(log base 10) |
Real PageRank |
|
0 |
0 - 10 |
|
1 |
100 - 1,000 |
|
2 |
1,000 - 10,000 |
|
3 |
10,000 - 100,000 |
|
4 |
and so on... |
|
We can’t know the exact details of the scale because, as
we’ll see later, the maximum PR of all pages on the web changes
every month when Google does its re-indexing! If we presume the
scale is logarithmic (although there is only anecdotal evidence
for this at the time of writing) then Google could simply give
the highest actual PR page a toolbar PR of 10 and scale the rest
appropriately.
Also the toolbar sometimes guesses! The toolbar often shows
me a Toolbar PR for pages I’ve only just uploaded and cannot
possibly be in the index yet!
What seems to be happening is that the toolbar looks at the
URL of the page the browser is displaying and strips off
everything down the last “/” (i.e. it goes to the “parent” page
in URL terms). If Google has a Toolbar PR for that parent then
it subtracts 1 and shows that as the Toolbar PR for this page.
If there’s no PR for the parent it goes to the parent’s parent’s
page, but subtracting 2, and so on all the way up to the root of
your site. If it can’t find a Toolbar PR to display in this
way, that is if it doesn’t find a page with a real calculated
PR, then the bar is greyed out.
Note that if the Toolbar is guessing in this way, the Actual
PR of the page is 0 - though its PR will be calculated shortly
after the Google spider first sees it.
PageRank says nothing about the content or size of a page,
the language it’s written in, or the text used in the anchor of
a link!
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