We all use Google to an extent, for either search, or images, or creating documents, web pages, or just email.
The Google cheat sheet is a document published by Google as a quick reference to there search engine's specific operators to help us find what we are looking for fast.
Yes of course we all know that we can pretty much just type what we are looking for in Google and find it but this little gem makes it even sweeter..
Google's Own Cheat Sheet :
http://www.google.com/help/cheatsheet.html
[link to personal homepage removed]
Hopefully this was helpful to somebody..