Hi,
After reading the post from fumanchu (http://www.webmasterworld.com/google_adsense/4572026.htm), I wonder if Adsense exclude earnings from clicks outside US.
In May, my reported estimated earnings are ~$300, while the finalized one is only $90, which matches closely with estimated earning coming from US. So I am not sure if this is just coincident or a rule.
Thanks.