are there any resources available for comparing the two revenue streams? Have any case studies been done? Or is the best suggestion just to try both options out? If so what is a good duration to run the test over? I have a good feeling for what I earn on average with adsense but how long should I let ypn ads run to get a feel for how much they make? I would hate to let the ads run too long and see my revenue umbers keep dropping. thanks.
I've done some comparison testing in the last few days.. I intended on doing the testing for at least a week, but after only a day the earnings were so low for YPn and the ads were so horribly, retardedly, unbelievably poorly targted I had to take it down for the sake of my visitors. I've still left YPN on a few pages to see if the targeting gets better over time (but still no change).. It doesn't take a 'case study' to see that YPn has no clue what the word contextual means..
I've been comparing Yahoo and Google Adsense off and on for three years. Yahoo still sucks. The pay per click is higher than Adsense, but they haven't yet figured out how to deliver relevant ads that get high click rates. Overall revenue is still much lower than Google.
In my case the PPC is higher with YPN (sometimes close to $5.00), but the targeted of the ads really sucks, so I get fewer clicks. One thing compensates the other one.