Resumo de Metasearch Engine

A meta-search engine is a search engine that sends user requests to several other search engines and/or databases and returns the results from each one. They allow users to enter their search criteria only one time and access several search engines simultaneously. Since it is hard to catalogue the entire web, the idea is that by searching multiple search engines you are able to search more of the web in less time and do it with only one click. The ease of use and high probability of finding the desired page(s) make metasearch engines popular with those who are willing to weed through the lists of irrelevant 'matches'. Another use is to get at least some results when no result had been obtained with traditional search engines.Metasearch engines create what is known as a virtual database. They do not compile a physical database or catalogue the web. Instead, they take a user's request, pass it to several other heterogeneous databases and then compile the results in a homogeneous manner based on a specific algorithm.No two metasearch engines are alike. Some only search the most popular search engines while others also search lesser-known engines, newsgroups and other databases. They also differ in how the results are presented and the quantity of engines that are used. Some will list results according to search engine or database. Others return results according to relevance, often concealing which search engine returned which results. This benefits the user by eliminating duplicate hits and grouping the most relevant ones at the top of the list. Ixquick returns the top-ten results from multiple search engines. It uses a unique 'Star System' to rank its results - by awarding one star for every result that has been returned from a search engine. Thereby, the top search results are the ones that have been returned from the maximum search engines. Ixquick also can search in 17 languages, including Simplified and Traditional Chinese, Danish, Dutch, English, Finnish, French, German, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Spanish, Swedish, and Turkish. Each language version includes local search engines.Ixquick has many new features including a re-engineered metasearch algorithm, an international phone and lowest price directory etc. Ixquick became the first search engine to stop recording Privacy details of its users. Therefore, any user can now use Ixquick.com to search in a combination of the best search engines secure in the knowledge that they can enjoy complete protection of their privacy.Search engines frequently have different ways they expect requests submitted. For example, some search engines allow the usage of the word 'AND' while others require '+' and others only require a space to combine words. The better metasearch engines try to synthesize requests appropriately when submitting them.Results can vary between metasearch engines based on a large number of variables. Still, even the most basic metasearch engine will allow more of the web to be searched at once than any one stand-alone search engine.

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