AlexPAlex - 5:12 pm on Mar 22, 2005 (gmt 0)

IMHO Google will continue to improve Adsense based on their experience in this business in the last 2 years. They have a headstart and thats very crucial. I don't think Yahoo can trample adsense just so easily. Further I feel that Google maintain their predominet position not simply because they have a good product in adsense but they have a collection of good products which act in concert to maximise advertiser ROI and publisher returns. As long as Google maintain that position (e.g leader in search, new product like Gmail etc.), it will be a tough effort for Yahoo to match YPN to Adsense. Yahoo have to get back its search market which they lost to google in late 90's. Only that can convince me that YPN could be a success.