SANS Google Cheat Sheet
Yet another cheat sheet for those who want to power user Google.. but this one's from SANS and is from a defense of Goggle as a hacking tool perspective (to check your own site and see what data is bleeding out unintentionally). This sheet will also help those who just want to get tight and relevant results and aren't familiar with some of the operators Google offers. (Note: the phonebook, rphonebook and bphonebook operators have been retired.)