PR & permanent redirect

[sugar66]

I'm planning to set up a "permanent redirect" of one domain name let's say www.example.tld to an other identical site www.example.tld2.

These two site have different PR in Google "n" and "n-1".

Does anyone knows which could be the final PR?

1) "n" + "n-1"
2) "n"
3) "n-1"

I'm a bit scared in loosing traffic and position.

Thanks

[edited by: vitaplease at 12:55 pm (utc) on July 1, 2004]
[edit reason] examplified [/edit]

[doc_z]

Does anyone knows which could be the final PR?

It's A+B, where A and B are the real PR values (not the logarithmic PR values shown in the toolbar) of the two pages/sites. In most of the cases this corresponds to max(n, n-1)=n for toobar PR (assuming that the PR for the two pages/sites are stable, i.e. there are no significant changes). n+1 is possible, but very unlikely.

Of course, the correct answer is even more complicated because one has to consider the linking structures. However, in practice this doesn't play a role.

[sugar66]

Thanks doc_z! Therefore with permanent redirect I won't get any disavantages.
Is it right?

[doc_z]

As far as I know, there are no disadvantages. The pages/sites are merged (PR and incoming links are added). The only problem which I can think of is that removing the permanent redirect after a longer time might cause problems.