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From the website: Eurekster allows you to build a custom search portal, or "swicki," around any topic of your choice. Rather than returning millions of results like a generic search engine, swickis learn from the search behavior of a community of enthusiasts and experts, making it easy for you to quickly find what you're looking for within a particular topic. In addition, you can easily share a swicki with others and add a swicki buzzcloud to your site or profile ("grab" a swicki), which will dynamically display the hottest searches and give you quick access to that swicki and its community.

This tool allows you to create your own search engine on any topic. Users select the Web sites that are to be used for a search and then keep the search box (the place users will go to in order to type in keywords for the search)

a tool that customizes your searches in Google