Disclaimer : I found this on Digg. Thanks to Nirmal. We envision that you use the information given below for legal(or educational) purposes only. Thank you.
Hi all,
Here’s a cool tool named Google Hack which allows to you easily search for the file of your choice - be it music, video, lyrics, hacks, caches items, fonts, proxies, torrents, applications or books.

Google has in built search queries which can be used to effectively track down these files, but these long codes need to be appended to the search term. Who will bother to do that?
So here, a few smart guys have released a cool program which will surely reduce your search time, and increase your search accuracy, when you’re searching for such, uh, ‘unconventional’ things.
Google Hacks hosted at Google CODE is a program available for Windows, Mac and Linux. Download the appropriate file, and enjoy Googling