When it comes to advertising on the internet, everybody makes mistakes - especially beginners. Most people start off online with pay per click advertising thinking that they're going to make a killing from Day 1. Sadly, their dreams get killed on Day 1 when they see that all of their money didn't produce any sales for them. Why does this kind of thing happen? Well, there are a number of reasons for this result. One reason is something called "click fraud". This is when pay per click companies use robots to click on your ads and drain your balance so that they can get you to invest more money. Even some of the most well-known pay per click search engines do this.