MikeNoLastName - 9:26 am on Nov 16, 2004 (gmt 0)
In the short time (10 days) since we started trying adsense. I have seen a STEADY drop in the one figure which GAdsense DOES NOT report on their online reports and that is the average payment per click! This is the "your earnings" column divided by the "clicks" column. Wonder why they don't make this very important (at least to us) figure more easily accessible. In just ten days, as we increased the number of pre-existing pages carrying ads and the number of impressions and the number of clicks has almost doubled, I've seen this figure drop over 50% even comparing page to same page over that time (as well as sitewide).
Our board has already made the decision to automatically alternate ads on the same page between G and a couple of the other similar services to compare this "phenomena". Will let you know in a couple weeks.