Today i viewed my payment history page shows Earnings (Dec 1 - Dec 31) - $134.69 i was shocked, because my earning for december 2010 was $165.39. Also when i view the Last month Earnings report its shows actual $165.39 please anyone have this problem. please reply me.
Nothing shocking, google checked for valid clicks and washed the clicks and earnings that were invalid, i have seen people go from $300 to $20 in a shot.
Google shows estimated earnings for the whole month, once the month ends it verifies the earnings, so $165 is your verified earning after deducting invalid impressions/clicks etc.
check your december payment detail on payment history. There should be Adjustment - Other. Here the explanation about Adjustment - Other https://www.google.com/adsense/supp...&sourceid=aso&subid=ww-ww-et-asui&medium=link
Google deducts the earning came from specious/ invalid clicks. Your account is at danger. They may also suspend your account.