Forum Moderators: martinibuster
"More than conversion rate goes into determining the price of an ad: the advertiser's bid, the quality of the ad, the other ads competing for the space, the start or end of an ad campaign, and other advertiser fluctuations."
I think many people overlook all these factors when wondering about their earnings fluctuations.
And here is a good one for the conspiracy theories
"Google doesn't make money from 'smart pricing'
In fact, we make less money, since the cost to advertisers is reduced in order to provide a strong ROI. Ultimately, this leads to higher payouts for publishers by drawing a larger pool of advertisers and rewarding publishers who create high quality sites. "
[adsense.blogspot.com...]