old news to most but the fact is you can find just about anything on Google, including information that owners of the site don't want you to know.
Excerpt: "Google Hacking for Penetration Testers (Google Hacking for short) is Johnny Long and company's tome on the subject of using what is widely considered to be the web's only worthwhile search engine and the myriad of ways that you can get very specific information out of it. Not just for web pages, you can find Excel spreadsheets, Word documents, and all sorts of information that the owners thought was hidden. This is what makes Google hacking, as an activity, so interesting."
From: Google Hacking for Penetration Testers article found on
slashdot.org
As well, the author has a website which shows you, by clicking a link which opens the sites in google, how to get specific and hidden information from a website by using Google. You can view the site
here