Google, Yahoo and other providers of online ads said they are increasingly being targeted by online fraudsters, who exploit weaknesses in the Internet ad system to generate revenue or hurt their competitors. The Internet giants said they are working to combat the problem, but some advertisers accuse the companies of not moving aggressively enough because […]

Now, however, a slew of technology companies, including Ingenio and Snap.com, are starting to offer alternatives to pay-per-click that they claim correlate more closely with the actual sales of the advertisers' products and services. And I think they are on to something.
Read the full article: Rise of New Payment Models for Search Advertising