Pay Per Click (PPC) advertising is changing the whole marketplace. Remember the Dot-com bubble in 1999, when it all came down? Multi-Million Dollar companies that all of the sudden where worth next to nothing?

Some people say that’s what’s happening right now, with billions of dollars being spend on online advertising every year. But it’s not. It’s very different. Back in 1999 very few people had a real idea how to make money online - nowadays, there are pretty big companies with pretty sophisticated business systems that generate real revenue.

The biggest players in the field are companies like Google Adsense, Yahoo Search Marketing, Microsoft AdCenter, AdBrite and others.