It is truth, Less U.S people clicks on Google Ads now Read this article: http://detnews.com/apps/pbcs.dll/article?AID=/20080227/BIZ/802270351/1001/BIZ
Yes, but probably worse than that. My personal theory is that Google is nowhere near as profitable as it once was, so it is taking a bigger cut of AdSense earnings to meet its own earnings targets.
Smart pricing .... My Theory is that the ecpm or cpc will drop with the more clicks you get daily. For instance if I have a bad day 1% ctr will be worth about 20c per click. At 2% ctr clicks will be worth about 15c per click. At 5% ctr clicks will be worth about 6c per Click. I have prrof of this but I can not show it obviously, I reckon the above is the real meaning of smart pricing.