Have a read of this.

http://news.cnet.com/8301-13739_3-10038963-46.html

It sounds like Google's 'anonymization' may in fact be a trivial, ineffective change.

Users do not have unique Internet Protocol (IP) addresses. In fact human beings have no IP address, unless they are part of the Borg collective, and then it would be a drone address. Computers MAY have been assigned a unique IP address, but often they get a random IP address assigned from a pool for a short time period. And even then the IP address may not be unique since the same address can be shared by multiple computers, a common practice used by ISPs who provide rotten uni-directional Internet access. Last but not least, computers may host multiple users at the same time, unless they are operating under the yoke of a primitive MS-DoS derivative.

It is so good to know that the EU feels so positive about Google getting closer to complying with the law. Don't push Google too hard on that one. Sigh.