I am running an advertisment from the CJ Network on a site that gets several hundred page views per day. And I cut an pasted the AD EXACTLY from the code given on the CJ site. I view the source code on my site and the code is completely intact including the image source. CJ has not tracked a single impression. The is why I don't do much with CJ. Because you are often working for free. The clicks still go through to the site, but they are not being tracked either.