Pay per click advertising is just that. You place ads on the internet through a service or through affiliates. You only pay for the ads when internet surfers click on them, leading them to your sales website. There are several types of pay per click advertising, and there is no reason that you should not use them all in your internet marketing campaigns. Some pay per click advertising is displayed as sponsored results on search engines and directory web sites. Other pay per click advertising places ads on popular general or related web sites that are often visitedby internet surfers that may be interested in your products services. The final type of pay per click advertising is when you enlist affiliates to place ads on their web sites and pay them when you receive visitors from their site.