razinkane - 2:39 pm on Jun 11, 2005 (gmt 0)

I think it all boils down to the unknowns for publishers as far as AdSense and Y!: 1) How much unused advertiser click budget is left on the table at the end of the month. 2) Which will give publishers the most revenue. 3) Which will give advertisers the higher ROI.

I am sure we'll learn the answers to 2 and 3 here at Webmaster World in the next 6 months. As far as how much unused advertiser click budget is left, Shouldn't that be a published figure? As media companies, they should disclose fulfillment rates by industry.