Quoting Marianne van den Boomen <M.V.T.vandenBoomen@uu.nl>:
I would like to contribute to your research, but when I try to use google.com it redirects automatically to google.nl - speaking of peronalisation ;-)
The localization can go down to the city level - when I visit friends, Google News brings up local news sources, ads, etc. More interesting is that sometimes it gets confused, and when I get back home, the visited city pops up randomly in news stream. Not sure if that's a bug or a feature ... Steve - I'm reading this today via the Hoard 3.1.9 web email package. It also localizes the page with weather forecast, moon phases, and TA DA ... a small flag icon next to the sender's address - so the flag of the Netherlands is displayed by Marianne's name ...