Yahoo Publisher Network : Run of Network Ads (RON ads)

If Google Adsense cannot find a suitable ad for your web page or its keywords, it displays Public Service Ads or PSA’s, which make no money for you. Yahoo Publisher Network or YPN has introduced Run of Network ads (aka RON ads) instead of PSA’s

Jensense says

“YPN introduced Run of Network ads (aka RON ads) on September 9th, when they introduced their ad targeting. Not having the ability to provide an alternate URL for PSAs (as you can with AdSense) was one of the problems that many of the initial beta testers had, especially when targeting took much longer. But with RON ads, there is no need to have any tools that would be needed if PSAs were still running. There is not a list of RON advertisers, nor is there an easy way to tell if they are RON advertisers or simply a case of targeting gone awry. But many have speculated that Comcast and Vontage are the most visible of the RON ads.”

They say advertisers are currently invited to become a RON advertiser based and this opens the possibility that in the future, advertisers could site target ads to appear as RON advertisements on specific publisher sites.