Internet is today the most widely used tool for searching and obtaining information in all areas, on all topics, from anywhere in the world and quickly. It is highly unlikely that any information or data not find on the Internet, but do not think any form holds the updated register of all pages that are on the network, so it is advisable to visit more than one search engine when you need to make a deep search and very specific. A search is computer system or search engine that stores files. It is basically a website with a powerful database (of existing sites) that allows specific searches in the content of these sites posted on the Internet, and gives a result of that search based on terms entered in the search for user. It is recommended that when a new site, a new page is created and then uploaded to the network, the same, be discharged from the search engines. Searching for information is a process simple where the user enters a query by placing a particular word or phrase, the search function is to check on their lists of pages indexed and to discover how many pages, is the subject of the request or are related to him, and immediately show all matches or combinations that you find on the subject.

The contents of the websites are indexed by search engines, but not by individuals, (ie the difference) but using programs (software) called robots or spiders (spiders) search, which are the sites that cover reading your content and removing the links in this. Each form has its way of presenting information, but their effectiveness is given basically in the amount of data and the technique they use to organize the best way to display the information and requested search. When a search is required dispatches a request to several search engines simultaneously and delivers the answer with the data or addresses obtained from all very orderly filing information and much more complete the user. They have a substantial advantage because they enlarge the search field and give us as much results. Metasearch engines can find videos, music lyrics, movies, educational, scientific, real estate, in order to all subjects. .