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The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to serve several billion users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents of the World Wide Web (WWW), the infrastructure to support email, and peer-to-peer networks.
Most traditional communications media including telephone, music, film, and television are being reshaped or redefined by the Internet, giving birth to new services such as voice over Internet Protocol (VoIP) and Internet Protocol television (IPTV). Newspaper, book and other print publishing are adapting to website technology, or are reshaped into blogging and web feeds. The Internet has enabled and accelerated new forms of human interactions through instant messaging, Internet forums, and social networking. Online shopping has boomed both for major retail outlets and smallartisans and traders. Business-to-business and financial services on the Internet affect supply chains across entire industries.

What is the Internet used for?
The Internet is a communication tool that allows the sharing of information at remote sites from other academic institutions, research institutes, private companies, government agencies, and individuals. Although originally used purely as an information sharing tool, it has now branched into many other areas of use.

* News and Information: The internet is still widely used for sharing information with other people. * Commerce: Internet commerce is a growing industry, contributing to a more efficient exchange of goods and services * Entertainment: Music and Videos are easily viewed and listened to on the internet. Internet gaming is a huge business. Communication via the Web
Although there are many advantages, researchers argue some disadvantages of an internet based society. Most of these drawbacks are a result of decreased face-to-face communication and the ability to escape identity.
Negative effects on family communication
Although there are conflicting research findings on this topic, an article published by Science Daily reported that time spent on the Internet was associated with later declines in within house family communication and a decrease in the number of friends and acquaintances with which they kept ties.

Lack of conflict resolution
The same article suggests that communication on the web is taking away necessary human conflict. For example, if an Internet conversation starts getting heated or if someone gets angry, it is too easy to just sign off and not deal with the issue. Resolving conflict is a part of life that shouldn’t be avoided and is usually psychologically helpful.
Lonliness
Another proposed disadvantage is that a couple of studies have found strong correlations between frequency of Internet use and loneliness. People that use the Internet often are more likely to become lonely and depressed than those that don’t. One proposal as to why this is the case is because of a potential reduced social support system as a result of the Internet.
Internet addiction
There is some controversy over whether it is possible to actually be addicted to the Internet or not. Some researchers, like John M. Grohol, claim that it is simply people trying to escape their problems in an online world and cannot be classified as an addiction. He demonstrates his theory with this model and states that what some people call an addiction is just someone that is caught in stage one.

How does the Internet work?
How does the Internet work? Good question! The Internet's growth has become explosive and it seems impossible to escape the bombardment of www.com's seen constantly on television, heard on radio, and seen in magazines. Because the Internet has become such a large part of our lives, a good understanding is needed to use this new tool most effectively.
How it Works
The Internet works because open standards allow every network to connect to every other network.
This is what makes it possible for anyone to create content, offer services, and sell products without requiring permission from a central authority.
It levels the playing field for everyone and it’s the reason why we have a rich diversity of applications and services that many of us enjoy today.
Who’s in charge of the Internet?
No one is, but everyone is.
Unlike the telephone network, which for years in most countries, was run by a single company, the global Internet consists of tens of thousands of interconnected networks run by service providers, individual companies, universities, governments, and others.