The internet sure has changed how we do things.

There is a lot of focus on the business benefits of the internet. Companies can reach a lot of potential customers at a fraction of the cost they used to spend on print or television media.

The music, movies and video games that are part of our lives are all online and more accessible than ever before.

The one powerful thing it has done is enabled us to connect with people all over the world in a quick and inexpensive way. 

Wikipedia states the definition of the Internet as...
The Internet is a global system of interconnected computer networks that use the standard Internet protocal suite (TCP/IP) to serve billions of 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) and the infrastructure to support email.

Some keys words that jump out about its meaning....