The Internet space is filled with the various resources offering entertainments and information of various character. In all this turmoil it is possible to deal only with the help of search engines.
The search engine is a set different program and hardware which main task is information search on the Internet. For the regular user the search engine is the normal web interface which in addition possesses still function of search of different data and resources of network.
At the heart of any search engine there is a so-called search engine which is a complex of software solutions for ensuring functioning of the search engine. As a rule the mechanism of its action is a trade secret of his developers.
Now there is a set of search engines, the most known of which: Google, Nigma, Yandex, Bing and some other. Each of these systems in the basis has the principle of scanning of keywords. Any resource or the website of the Internet is indexed (or, speaking more roughly, is registered) by the search engine not just like that, and by the request for indexation to administration of any given searcher. In reply the administration sounds necessary conditions for this purpose. As a rule, conditions these quite mild also consist in adding of any tags on the homepage of a resource.
After adding of tags the search engine begins to scan the code of all pages of a resource. Process will go much quicker and more simply if in the resources provided for indexation keywords are specified. Keywords are meant as set of words and phrases on which the search engine at request from the user could select this resource from set of others.
At the moment search engines in pure form do not exist any more. In addition to the searcher, his developers provide to users services of e-mail, electronic money, the systems of communication between users of the searcher and also a number of pleasant trifles as monitoring of weather conditions, traffic jams and other depending on tastes of developers.