I. Introduction Using the Internet in any field means communication without distance limitations, through an endless number of computers, which are called web of networks. This system gives us unlimited access to all the information available on the information highway. Today, the Internet is an integral part of our productive lives as a working tool and teaching aid, as well as a source of information, news and entertainment. The Internet is the largest computer network in the world. It links thousands of networks at the same time, allowing communication among people from different places in different countries. People can send and receive information in the form of text, documents, plots, pictures, sound, etc. Through the Internet distances seem to disappear, and in most countries the cost of this communication is relatively little (usually equivalent to a local phone call). For the first time in history, humans are capable of searching, creating and sending information in real time among a population of more than 55 million people.
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