filetype:xls + password + inurl:.com

Google dork Description: filetype:xls + password + inurl:.com
Google search: filetype:xls + password + inurl:.com
Submited: 2011-05-03
The filetype:xls never changes
What is inbtween then + sings can be what ever you are looking for
taxid
ssn
password
Student ID
etc

The inurl: can be changed to what you want
.gov
.edu
.com
etc.

Take care,
RedShift