Question on Page Rank Calculation

To be honest, there is no known algo for PR calculation (practically).
But PR depends much on the quality and quantity of external backlinks

Hi vincentind,

Page Rank is calculated like this

PR 1 + PR 1 + PR 1 = PR 2 but this is for future not for actual page rank

for example you put link to your site on 5 page that have each PR7, you will think that you have links on 5 page with PR7 but this is WRONG. Those page that have PR will decrease once PR is update again.

If you want to control page rank you must control pages/sites where u put links to make sure that their PR will not decrease.

Is easy to manipulate PR if you know how

Good Luck!

That is not how PR is calculated.

Everyone would have PR 10's if it was that easy.

There are many factors which contribute to Pagerank. You can find many sites with nearly 0 backlinks and still getting PR4 or above. Content is a contributing factor.

If PR/No and above.of links formula is used then sites using scrapbox blasts or xrumer must have PR6.

No one knows about exact PR ranking methods but Google. Remember I said the word 'exact'.

From all your suggestions and what i've read about PR calculation, i think either there's lot of really good guesses or flat out lies mentioned about PR calculation. Thanks for all your response.

what I understand from my experience is that PR is actually a calculation which include the many factors. It is actually given on the base of PR of the back linked sites + number of page indexed.

For the calculation of PR of back linked sites there will be a formula, which is the propriety of Google and Google will not leak its business secret. well what we can handle is the number of page indexed because all this calculation is then divided to the number of page indexed. for the reference you ppl can see the site of my signatures.

PR not just depends upon simple Maths. Even if you got links from say two different niche sites (one relevant and one irrelevant) then in either case the PR of your site will be different. It depends on many factors including the authority, quality and relevancy of the site you are getting links from.

The guy who first got me into IM 4 years ago brought something up one time and I'll never forget it. We were talking about PR and how to a higher one. He told me to go check out a site that a friend who used to work with us made about 7 years ago. It's a site dedicated to high school football scores in our state.

He said, go see how many backlinks it has and then go check the PR. I checked the backlinks and he had <100 and they weren't even that good really. So I checked the PR and it was a PR5! It's hard to express just how bad this site was in comparisons to a normal PR5 you're familiar with seeing.

He suggested that since he only had a small amount of (crappy) backlinks but still had a very high PR website, it was because of all the locals in our state Bookmarking the website so they could come back to it and check the scores.

I argued against it for awhile but eventually came to see the logic. So I added a "Bookmark Us" button to my 3 AdSense sites claiming the visitors should check back often because we randomly give away free Amazon gift cards. That was obviously a lie but I had to see if this bookmarking thing worked.

Well I have no physical proof but all 3 of those sites rose 2-3 spots after a short while. (3-6 weeks) Still to this day, that was the only time I had ever heard of people bookmarking your website in their browsers helping you in the SERPs but I'm a believer. I always add Bookmark Us buttons now.

Sometimes i wish i never asked. Still confused, interesting discussion though.

Don't spend too much time worrying about PR, its just an indicator of sorts but nothing to lose sleep over

Even if you look at the The Anatomy of a Large-Scale Hypertextual Web Search Engine made by Sergey Brin and Lawrence Page, still you won't have a clear idea as to how the PR calculated.

Anyway, IMO, striving to know how this thing is calculated is a waste of time. Instead, focus on things that will help you to manage your site.

PR depends much on the quality and quantity of external backlinks.
I think there is nobody can tell you the answer.