Effect of Off site & On site outgoing links on PR

[djtaverner]

If a site is linking to me does the PR algorithm treat that pages outgoing links to external pages differently from outgoing links to internal pages?

Cheers

Dave

[MikeBeverley]

Don't understand the question. If you are site A and the site linking to you is site B are you asking about links from site B to A, A to B, or the effect of site B linking to C, D, E & F aswell as A (you).

[Gory]

Links that point to internal pages keep the PR inside your site, links that point to external pages give some of your PR to other sites.

[anime_otaku]

I think what the original poster was trying to question is what this example shows.

example.htm has 5 links. 3 are navigational links to pages within its own domain. the other 2 are external links to other websites. is the PR distributed equally (as in 20% to each link) or is there some additional weight given (more pr given to internal links or vice versa).

[djtaverner]

Sorry for phrasing the question badly,

anime_otaku's interpretation is what I am wondering.

Cheers

[steveb]

No.

[GoogleGuy]

If you go back to the original PageRank papers, these links were treated as uniform--on-site vs. off-site didn't matter.

[ciml]

Quite, and while penalties such as "can have PR but not pass it on" change things, I'd say that PR flows in essentially the same way now as it did in the backrub days.

However, that is not to say that the anchor text boost for ranking is the same for internal and external links.

[Herenvardo]

If a site is linking to me does the PR algorithm treat that pages outgoing links to external pages differently from outgoing links to internal pages?

Easy question. The answer is no.

To calculate the PageRank for a page, all of its inbound links are taken into account. These are links from within the site and links from outside the site.

PR(A) = (1-d) + d(PR(t1)/C(t1) + ... + PR(tn)/C(tn))

That's the equation that calculates a page's PageRank. It's the original one that was published when PageRank was being developed, and it is probable that Google uses a variation of it but they aren't telling us what it is. It doesn't matter though, as this equation is good enough.

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.

taken from [****.net...]
There is no distinction among internal and external links.
You can try it at [****.net...]

Herenvardö

[Herenvardo]

does the PR algorithm treat ... differently

As I said, the exact answer to that exact question is no.
The algorithm makes no distinction.
But (without a "but" there wouldn't be discussion;)), if you asked something like Do internal and external links affect differently to a site's PR?, then the answer wouldn't be so easy... and I guess that it has more practic interest this question than the original.
Through your link structure, knowing the PR formula, you can make your PR to flow as you wish within your site: you can inflate your home, distribute equally through all the site, distribute in a ierarchic form, etc. But when you link outside your site, you're sending a part of your PR to somewhere you'll probably unable to control it.
Said in other words, the PR that an external link gives to another site is PR that could have gone to other pages of your site and even returned to the linking page. This is what some people call PR leak.
So, basing only on numbers and the formulla, you'll get the most PR if you don't have any outgoing link in your site... But (hey, the "but" again ;)), basing on more than numbers and theory, we can thing that if you don't link to anybody, anybody will link to you... and that's not so good :P
If you want, you can play a bit with this tool:
[****.net...]

Hoping be useful,
Herenvardö
[edit]Yeah, it seems that the link has been auto-edited. If somebody wants to play with the calculator, tell me and I'll sticky you the link ;).
Note: I used it a lot when I was a beginner on SEO, and I found it very useful.
[/edit]