Google are sneaky little merchants who keep records of everything to make more money and appeal to their overlords.
When you search something in Google, it usually sends search terms to that site and your browser data and computer info. These sites thus build up a profile of you, and will bombard you with ads. Your online profile can also be sold.
Google, being a tool of the paranoid and power obsessed System, also saves all search histories of users. These search histories can be legally requested:
“Like other technology and communications companies, Google regularly receives requests from governments and courts around the world to hand over user data. In this report, we disclose the number of requests we receive from each government in six-month periods with certain limitations. Usage of our services have increased every year, and so have the user data request numbers.
We continue to look for new ways to organize information and provide more detail. For example, starting with the July-December 2010 reporting period, we began to disclose the percentages of user data requests we comply with in whole or in part. And starting with the January–June 2011 reporting period, we began to disclose the number of users or accounts about which data was requested.
Our FAQ about legal process provides information about how we aim to put users first when we receive user data requests. To learn more about the laws governing our disclosure of user data and reforms to those laws that we think are important, visit http://digitaldueprocess.org/. We hope this report will shine some light on the appropriate scope and authority of government requests to obtain user data around the globe.”