Google - The hacker's new tool.

Yes, u heard it right, google search results can provide you valuable information regarding the network topology of some of the large networks, sql and other databases passwords, cracks/serial numbers of any programs, even you can find ways and tools of hacking the major softwares such as microsoft products, maya (one of the best 3d softwares), all games etc.

The source article is Google now a hacker's tool which describes the briefings of the Google Hacking for Penetration Testers presentation by Johnny Long at Black Hat Conference, USA 2005.

They have given explained it using example of "NASA", in which googling offers an insight into the structure of Nasa's (the U.S. National Aeronautics and Space Administration's) internal network.