A tipsheet for more powerful Google searches, and search for synonym
If you've not learned the many useful keywords you can use in Google searching, here's a cool resource to learn more. One I didn't know about was ~ for synonym searching.
The resource is a tipsheet at http://www.googleguide.com/advanced_operators_reference.html by Nancy Blachman (which I myself learned about from a nice bog entry from my colleague Pete Freitag pointing to several such tipsheets: http://www.petefreitag.com/item/455.cfm).
If you don't know the benefits of surrounding a string with "s (to get an exact match), or using + to force a word to be in the result, or - to not allow results with a word, or the powers of the predicates like site:, filetype:, inurl:, and more, do check out the site (and the Google docs).
As a fan of Google, I did know about all but one of the tips Ms Blachman points out: I never noticed the option for ~, to cause Google to find a synonym for the word it prefixes. Check it out.