On this blog, you might know that YPN and Google Adsense ads are rotated at random between visits/pageviews. Barry has been actively testing what works better YPN/Adsense for the past couple months. His conclusions where that YPN clicks do slightly better then Adsense and earning are higher on YPN.
I came across a blog post and thread on Digitalpoint about how someone is saying rotating YPN and Adsense actually is doing harm to your campaigns because the YPN bot is having trouble matching ads with the content of the site. People are getting what Yahoo calls Public Service Announcements (PSA) ads such as Vonage.com, Lendingtree.com, and so on.
Tim Light from Timlight.com mentions in his blog that"
So the next logical question was why am I getting PSAs on YPN? After having a few of the YPN engineers look at my site they figured out the reason it was getting PSAs was because I was rotating pageviews between YPN ads and AdSense ads. Basically the YPN bot that crawls pages to determine the content was getting confused because the page content was constantly changing and the YPN ads were there one second and gone the next. So each time a YPN ad was displayed it triggered a new “content review” and PSAs would be displayed.
I didn’t buy this answer at first, however [YPN] suggested that rather than rotating AdSense and YPN ads by pageview that I rotate them by day or at least every few hours.
Long story short, rotating every couple hours, days or so on worked better and eliminated PSA ads.
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