Interesting article from SecurityFocus, via TheRegister, on how you or others can use Google to find things that aren't meant to be found. Talks about use of some advanced Google search techniques, and how passwords, budgets, medical records and more can be found (and how they inadvertantly get into Google in the first place).
johnny.ihackstuff.com :: I'm j0hnny. I hack stuff.: "Googledorks!
googleDork (gOO g�l'D�rk) noun 1. Slang. An inept or foolish person as revealed by Google"
Examples: Error Messages (31)
Really retarded error messages that say WAY too much!
Files containing juicy info (35)
No usernames or passwords, but interesting stuff none the less.
Files containing passwords (22)
PASSWORDS, for the LOVE OF GOD!!! Google found PASSWORDS!