Online advertising, as the name suggests, is advertising on the Internet. Internet-based advertising has now become a very large industry in its own right with A$620 million being spent in 2005 in Australia alone (Source: Audit Bureau of Circulation). In the US, Internet advertising ballooned to A$17.6 billion in 2005.

So what? Well, if that much money is being spent then that means the money is no longer being spent on other forms of advertising. One could then assume that something is making these people spend money on online advertising. That something is quite simple - because it works and it is measurable!

The beauty of Internet marketing and the advertising technology that has been created by the likes of Google, is that any business can spend money on targeted advertising and monitor the performance of that investment.