If you're using AdWords or AdSense you must have heard about an emerging practice in the underworld of computing called "click fraud". But what exactly is click fraud and how is it accomplished?
Well AdSense uses a payment mechanism that awards a certain amount of money to a publisher (someone who holds an AdSense banner on their page) every time a person clicks on the said banner. So click fraud is the attempt to have people clicking the ads just so that they can earn a greater income.
There are people setting up sites for the sole purpose of fraudulently generating revenue through Google's AdSense program. These users achieve an incredible number of clicks through many methods, some complex and sophisticated and some rudimentary and simple.