Things you should know about Google search

Do you use Google all the time ? Most of us do. Chances are that Google is even set as you homepage.
All of use it use Google for searching information and stuffs but do we know everything about Google search ? 

This illustrative presentation throws light on some hidden aspects of Google search that you should be well aware of. For example, did you know that anything you search for, on Google, is stored inside their databases and these search logs can be legally requested by anyone ?