Differences between google.com and .com.au results.

[danbot]

When i do a search for "keyword terms" on www.google.com the results are different to the same keywords on www.google.com.au .
This doesn't neccesarily surprise me, but I'm trying to get my head around why?

Is it because
a) Google is structuring the results based on the region or country domain that I am searching from and trying to deliver results specific to me?
OR
b) This is due to a delay in each server updating results/ranking from each other?

In the last few days my results listing jumped dramatically on www.google.com but i am guessing that most of my customers will be coming via www.google.com.au.. I am wondering if I can expect this increase in ranking to follow through to the .au results.

[deej098]

This is something that I have also wondered about for some time. Looking at the search results for both google.com and google.com.au (the web option selected) it seems on the google.com results there is a skew towards .com sites where the same search on google.com.au is a mix of .com and .com.au sites.

I would be focussing my efforts on the results seen on google.com.au because if you try and type in google.com into the address bar it redirect the user to google.com.au