The Internet has come a long way since the days of its inception many years ago. Before, it was only a research tool for guys in white coats to quickly and easily share information back and forth. Nowadays, it's not uncommon to watch TV, and have a video chat with your friend from another continent at the same time. The Internet started with the idea of sharing a few simple text files.
A short time later, the world wide web was made. This, of course, was based on the picture of a spider web, where every strand is connected to every other strand through "links". It still wasn't all that popular, and was only used by students and professors as a way to stay in communication.
When dial up speeds increased, and switched over to cable modems and other "always on" connections, people really began to see the awesome potential. As download speeds increased, people could find more and more cool stuff online. From text files, to simple pictures, to short videos, and to the current environment of streaming live video in face to face chats.
Just only a few years ago, it was optional for a business to have a web site. It was more of a presence than anything else. But today, many businesses do most, if not all, of their business online. What is like the biggest, and most well know online company that shattered the hundred year old brick and mortar model was Amazon. Purely an online shop that delivered hard goods to customers, they forever changed the way to do business.
Today, most companies spend a significant part of the advertising budget on online advertising. When Google came up with the concept for ad words, and pay per click, it changed marketing forever. Direct marketing has always been a profitable business, but until Google, it had always been a slow, mail order scale model. Not any longer.
Of course, along with that came a few dangers. Spyware and adware programs were created. To sneak into your computer and watch which web sites you visit, and what kinds of documents you read, and even what kinds of things you may be typing in your email. According to the old mail order model of marketing, spyware and adware would be the equivalent of somebody breaking into your house to see what products you use, so they could send you more targeted advertising. Of course, just like you can protect your house from thieves with a strong lock, you can protect your computer from spyware and adware programs with a good anti spyware program. These will effectively get rid of any programs you already have installed, and prevent further invasions. In short, in today's Internet environment, these programs are an absolute must.