Data to be anonymized in a year or so

Why on earth would Google's PR department think they should tell us this?

...said it is taking steps to anonymise, or obscure details, after 18 to 24 months on the surfing habits of tens of millions of web users that could potentially be used to identify individuals.

The company collects information on web searches, such as the keyword queries, internet addresses and "cookies" used by websites and advertisers, to track web surfing habits.

Google plans to implement the policy within the next year, it said.

So your anonymity is totally assured, except for the little matter of any web surfing you have done in the last couple of years...