|
How
is PageRank Calculated? |
|
No one knows for sure how PageRank is currently
calculated by Google (except Google itself). Some
speculations about the algorithm are made by
webmasters all of them are based on the original
PageRank published by Google.
In essence, Google interprets a link for page A to
page B as a vote by page A for page B. This means
that page A is considered important (at least by
page B).
The more votes (more links) page A gets the higher
its PR will be. |
|
|
When
does Google calculate PRs? |
|
Google
calculates pages PRs once every few months, this is called
PR update. After a PR update is done, all pages are
assigned a new PR by Google and you will have this PR
until a new PR update is done.
New sites that were just launched will have a PR of 0
until an update is done by Google so that they are
assigned an appropriate PR. |
|
Going into more details |
|
As stated above, the main factor in PR is links (or
backlinks as they are
called). But no all links weight the same when it
comes to PR. So an 'important' page linking to you
gives you more PR than a 'less important' one.
There for you should always try to get backlinks
from pages that have a high PR. These will benefit
your page the most.
Another factor in PR propagation is the number of
out-links the 'voting' page have. So a PR4 page with
only one out-link on it might give you more weight
than a PR5 page with 100 out-links on it.
An typical example here would be the famous
milliondollarhomepage. This page is PR7 page with
hunderds of out-links therefore its weight is would
contribute very little to your page PR. |
|
|
|
|
|
