Click but no earning?

Have your encounter in your adsense report where no earning but there was a number of click?

 

never had it, but it may be that adsense brought only very low paying clicks, smartpriced maybe?

 

Maybe the same person clicking again?

 

Well, in theory every click should be worth at least something. I thought the lowest was 1 cent.

 

I think it may have been a CPM based ad.

 

yes...logically must be not zero...at least 1 cent as you said.

 

Public Service Ads

 

Yeah very posibly

 

Well...

Yesterday I had two clicks with zero earnings on one of my sites. I wrote to Google. This is their reply:

Maybe yours was invalid too.

 

For your information:
How does Google detect invalid clicks?
https://adwords.google.com/support/bin/answer.py?answer=6114

 

It was probably PSAs. Or maybe you accidantally clicked an ad yourself.

 

yess...i think PSA i the right answer...thank you

 

It may be clicked on cpm ads.

 

I also had this 1 click $0 earnings I found out that this can happen if the person who clicked doesn't stay on the page for 30 seconds.

Source: http://www.google.com/support/forum/p/AdSense/thread?tid=32cf1ca3875832c5&hl=en

 

some times you get $$for impressions

or u get clicks on public services

Try to filter the public ads by add them in the competitive ads filter

 

yes off your public adds