Google adding search privacy protections

Anonymization of PCs used in searchesUnder a new policy, Google will make it harder to identify specific computers used in searches by anonymizing the final eight bits of the IP address and the cookie data after 18 months and 24 months. Privacy advocates in general said the policy change is a step in the right direction but not nearly enough to really protect Web searchers from overzealous law enforcers. How would you rate Google's policy change on a scale from one to 10?