From Red Herring: Google Gets Customizable

Users can create customized search engines for their sites to focus on any kind of content.
In another round of battle against Yahoo, Google has introduced a customized version of its search engine that will enable bloggers and other web site operators to offer a specialized form of Google to search for specific kinds of content, like a favorite sports team, actor, or hobby. The service, dubbed Google Customized Search Engine, allows users to select which web pages they want to include in a Google index, how the content should be prioritized, whether other users can also contribute to the index, and what the search results page will look like. The Mountain View, California, search giant is upping the stakes in its rivalry against Yahoo, which offers its own customized search engine, Search Builder. Other search vendors also offer such features, like blinkx, which recently introduced a customized version of its video search engine.