Iv'e seen this mentioned before, but has anyone got a definative answer for the clicks but no earnings situation? These arent the public service ads google talk about, there the usual ones that appear on my blog and normally receive a payout? Any answers?
Some person must have repeatedly clicked on your ads and the adsense system marked them as "invalid". Thus, you got the clicks, but no earnings.
Your GEO must stink as Adsence will cut out a few countries, but among the sfw sponsors is one of the most tollerant for GEO. So i suggets you filter all the crappy traffic you are getting, im making around 8.6cents per click with adsense, filtering all cina, india and other non paying country clicks.
sometimes when you change contect completly or page is fresh it showing CHARITY adds and they are FREE ;]
It could possibility of the fact that it was a click that was bought for 1 cent and since google cannot split 1 cents, they instead just give you nothing.