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Search engines

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Search engines

Search engines are essentially massive databases that cover wide swaths of the Internet. Most consist of three parts: at least one program, called a spider, crawler, or bot, which "crawls" through the Internet gathering information; a database, which stores the gathered information; and a search tool, with which users search through the database by typing in keywords describing the information desired (usually at a Web site dedicated to the search engine). Search engines' back-and-forth interaction style is clumsier on mobile devices. Conversely, mobile provides added value for services that know their users and understand sufficient context to give them exactly what they need, when they need it perhaps without their having to ask. Search engines are programs that are designed to search for information on the World Wide Web (WWW). Included in this list of information would be web pages, information, images, directories, audio and video files, and other types of files.

Search engines will follow what people think. Search engines that do this feel that they are providing a valuable service to the webmaster by listing the website. By charging significant fees for listing, they expect to avoid insignificant websites. Search engines use regularly updated indexes to operate quickly and efficiently. Without further qualification, search engine usually refers to a Web search engine, which searches for information on the public Web.

Search engines use automated software programs knows as spiders or bots to survey the Web and build their databases. Web documents are retrieved by these programs and analyzed.

Web search engines work by storing information about many web pages, which they retrieve from the WWW itself. These pages are retrieved by a Web crawler (sometimes also known as a spider) ? Web directories are human-compiled indexes of sites, which are then categorised. The fact that your site is reviewed by an editor before being placed in the index means that getting listed in a directory is often quite difficult.

Metacrawler pulls several search engines together and SavySearch seems to find some weird stuff I do not dig up using the others. I suggest you give all the engines listed a try and see which ones work best for you. Meta search engines search multiple search engines simultaneously. Each meta search engine sends your search to several search engines, which will return varying results. Meta-Search Engines allow a search to be submitted to several search engines at the same time.


   
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