Paul_N - 11:37 am on Apr 19, 2005 (gmt 0)

Many Advertisers use G because they use Smart Pricing that can significantly lower their advertising costs.

Y will have to do something similar to Smart Pricing to make it cost effective to move from G to Y.

Speaking as an Adwords Advertiser and an Adsense Publisher, I would rather pay less on Adwords, than earn more on Adsense. It would appear that publishers tend to be at the end of the chain. Searchers are the most important asset to an SE, then Advertisers, then Publishers. It would certainly appear this way considering Google's stance on Smart Pricing. And believe me, us Advertisers have to jump through hoops to get our ads approved, and in decent positions as well.