Google keeps track of what we do on the Internet. Google keeps a record of every single click you do on Internet.
If you use an Android Phone then you are always under Google’s eye. Almost all of the shares of Android OS are owned by Google and Android had reached every home, so Android is also a tool to track your activity.
Google openly admits that it collects the following information from user behind the scene:
Device Information
Log Information
Location Information
Unique application numbers
Local Storage
Cookies and similar technologies
http://technischblog.com/stop-google-from-recording-everything/
http://technischblog.com/how-to-make-money-without-google-adsense/