[Sussex] "Google" General Question

[Alan F]

> When I go to http://www.google.com it somehow knows that I am based in the
> UK and all of the adverts are UK related.
> 
> How do they determine that I am in the UK?  Is it based from the IP address,
> or some other means?
> 

Your browser sends your locality and language in the Accept-Language:  
header.

Your can see what yours is here,
http://www.xhaus.com/headers

Hope this explains it (and is accurate) :-)
Alan