Joost de Valk, the Dutch SEO who recently created a Firefox plugin for de-personalized Google search, has put together a one-page guide to the various Google search parameters that can be appended to a Google search.
The list includes modifiers for many of the advanced search queries, such as date restrictions or appearance of a certain phrase in a page’s title, body, url or links. It also includes result modifiers, such as the one used for getting non-personalized search results, even when a user is logged into a Google account (&pws=0). Other modifiers allow localization, from country down to latitude/longitude coordinates.