Danny Sullivan sums it up nicely in his SEW blog entry named Bush Administration Demands Search Data; Google Says No, Others Comply where he says;
The Bush administration wanted one million random web addresses and records of all Google searches for a one week period. The government apparently wants to find out how much pornography shows up in online searches and how often people may seek it.
Here's a thought. If you want to measure how much porn is showing up in searches, try searching for it yourself rather than issuing privacy alarm sounding subpoenas. It would certainly be more accurate.
This sprung the need for Danny to start a thread at his forums named A Search Privacy Bill Of Rights. In that thread he asks members to answer a few questions, including; What do you think should be in such a bill? What protections do you want specifically spelled out?
Should make for a nice thread. Forum discussion at Search Engine Watch Forums.