A search engine is a web-based tool that enables users to locate information on the World Wide Web. Popular examples of search engines are Google, Yahoo!, and MSN Search. Search engines use automated software applications (referred to as robots, bots, or spiders) that travel along the Web, following links from page to page, site to site. The information gathered by the spiders are used to create a search able index of the Web.
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This post has been edited by Richard Smith: Dec 26 2012, 02:00 PM