The anticipated popularity of Google's new desktop search tool means that soon it will be commonplace for everyone to search their computers as easily, comprehensively and quickly as they search the web. After all, several of Google's competitors already are working on desktop search offerings of their own. So even if you don't use Google's tool, chances are, you'll use someone else's.
In short, a new era of search is being ushered in. With it comes some new issues about search privacy. We've already seen how people are sometimes shocked to discover that personal information about themselves is out on the web and made easily accessible through search. Our Search Engines & Legal Issues page recounts many such examples.