Exposing click fraud

With the increasing popularity of Google & Yahoo search engine Ads, and the widespread use of technologies such as Ad-sense on websites, click fraud is beginning to become a growing problem.

Click fraud is perpetrated in both automated and human ways. The most common method is the use of online robots, or "bots," programmed to click on advertisers' links that are displayed on Web sites or listed in search queries. A growing alternative employs low-cost workers who are hired in China, India and other countries to click on text links and other ads. A third form of fraud takes place when employees of companies click on rivals' ads to deplete their marketing budgets and skew search results.

Google and Overture employ "fraud squads," or teams of people dedicated to fighting click schemes. But at least two marketing executives say such countermeasures are missing fraudulent clicks that are responsible for between 5 percent and 20 percent of advertising fees paid to all search networks.

ZDNet has this report. A related article on the growing demand for ad-space on search engines can be seen here.