Google Personalization Search Is On Its Way through Google Web History:

Google Web History to Display Search Results Even when You or I are NOT SIGNED IN:

Before going to discuss on the topic, I will like to let you know what Google Web History is. According to Google:

With Web History, you'll be able to:

* View and manage your web activity.

You know that great web site you saw online and now can't find? From now on, you can. With Web History, you can view and search across the full text of the pages you've visited, including Google searches, web pages, images, videos and news stories. You can also manage your web activity and remove items from your web history at any time.

* Get the search results most relevant to you.

Web History helps deliver more personalized search results based on the things you've searched for on Google and the sites you've visited. You might not notice a big impact on your search results early on, but they should steadily improve over time the more you use Web History.

* Follow interesting trends in your web activity.

Which sites do you visit frequently? How many searches did you do between 10 a.m. and 2 p.m.? Web History can tell you about these and other interesting trends in your web activity.

Google Web History to affect search results only when you or I are signed in on Google. But with new Google Web History, you will find personalized search results based on your online behavior even when you are not signed in. Now when you search on Google your will find Web History at top right hand side of the search page near Search Settings and Sign in.

Web History | Search settings | Sign in

When you click on this Web History link, you will find:

Your search results may be customized using search activity from this computer.
Disable customizations based on search activity.

You can click on the above link to Disable customizations or enable it

Customization based on signed-out search activity is disabled.
Enable customizations based on search activity.

Now with this new feature, your search will not only be based on your Geographical Location but also on your online search activities on your computer.