So what exactly is Pay Per Action (PPA)?

The Google AdWords (for advertisers) and AdSense (for publishers) programs currently charge/pay each time an advert is clicked on and this is open to abuse by fraud publishers clicking on their own adverts or using automated click-bots to gain revenue.

Google is oh so very aware of this and some sites are quoting figures of up to 30% of all clicks could be considered fraudulent.This is a hell of a lot of profit for the fraud-gangsters and a huge cost for advertisers even if only a small percentage of this is undetected.

Despite the click fraud problem the advertising model does work really well and continues to attract both advertisers and publishers. This just shows how effective online ad campaigns really are!