To activate the RSS feed advertising in the Yahoo Publisher Network admin, go to the Ad Setup area and select RSS Ad Layout. First register their RSS feed, and then generate the RSS ad code which is to be installed in the blog’s RSS template. I have not tested this part of Y!PN yet, but do understand that such implementation of contextual ads into RSS templates can be a bit tricky. Y!PN is offering a guide on doing so called the Ads in RSS Setup Guide, which is available on the ad setup page. I’m not sure how this implementation works with blogs that use Feedburner for RSS tracking. If you use Feedburner and have some insight on RSS Ad implementation and whether it works via FB service, please leave a comment below.
Personally I’m not very fond of RSS ads as a publisher because I’d rather have the end user visit the site, then be given a choice of ads.. especially if I’m running CPM based ads on the site along with pay-per-click contextual advertising such as Yahoo Pulisher Network or Google AdSense.