Spotted these Google AdSense ads in a RSS feed that is syndicated through FeedBurner.
You can find some additional screenshots below. May be these ads are part of the AdSense for feeds program that is under beta testing with select AdSense publishers or they could be related to the upcoming AdSense for FeedBurner Feeds program.
To view these AdSense feed ads, go through Bloglines or just open this FeedBurner link in IE browser. And here’s the sample AdSense code that is integrated in the Feed XML to generate these Google ads:
<map name="google_ad_map_abc"><area shape="rect" href="http://imageads.googleadservices.com/pagead/imgclick/abc?pos=0" coords="1,2,367,28"/><area shape="rect" href="http://services.google.com/feedback/abg" coords="384,10,453,23"/></map><img usemap="#google_ad_map_abc" border="0" src="http://imageads.googleadservices.com/pagead/ads?format=468x30_aff_img&client=ca-pub-123&output=png&cuid=abc&url=http://www.abc.com/abc.html"/>