It happens, it really is bull****, causes me to curse a lot. They could be PSA or very low bids of $.02 but sometimes I think adsense just plain takes advantage.

Yea, got 4 clicks today with no pay. Its for invalid clicks

Great, I wondered how I could get $0.00 for clicks and it's because it's less than a penny. Good to know. I guess the best thing to do is promote like crazy, does anyone have any alternatives to google adsense? Ones that pay well? Would be interested to know.

Thanks
T

They are right. It is because of PSA/Public Service Ads, advertisers pay less in the keywords regarding your ads or maybe no one really clicks your ads unless you've tried it for yourself...

Yes, it can be, either fraud click or click that lower than $0.005

ya it is possible $0 for a click means, then it is a invalid click