hahaha. u r lucky. Dont be scared. it maybe google adsense's bug or may be reality. Sometimes thay pay u for only impressions. but dont need to worry about it.
how much did you earn. if it is one or two pennies, it is normal to earn from impressions once in a while
I had that happen with one of my sites a few weeks ago. It was only pennies and so I didn't ponder too much about it.
Basically the main reson is that you are earning due to CPM Ad which pays for impressions. Yes its normal , no need to worry. Can you provide us more detail that how much you have earned if they are few cents its ok and if they are in dollars and its a routine then something going wrong in your account. the best advise to add your site in the Allowed sites this will help in protecting the misuse of your adsense code. Hope this helps. Regards Tehmina
If you have received few cents than its ok but some $$ than your account stats are not updated properly . Wait for few hours and check it again .
Hey wussadotcom, I encountered this when I first started using adsense and I was told that it would be updated and show later that day in my stats which it did. However if you are getting money for nothing then you cant complain. Yours, Laura_D
I think you are using a Image ads in your site, for which you will get paid for Impression no need for clicks.
Well I've never do put any CPM only paid per click and I earn around $0.50-$1 each 2,3 days.. must be lucky I guess.. thanks everyone