nickreynolds - 9:08 pm on Mar 18, 2012 (gmt 0)
like the "estimated readings" your electric company may use to bill you in advance; sometimes they are accurate, sometimes not. Only real meter readings (finalized earnings) accurately reflect the reality.
When I have an estimated eletric meter reading, the actual reading may be more or less. Has anyone had actual earnings more the estimate in adsense? I think probably not. So I think that analogy is pretty week.