Just looking back over my stats for the last few days and have realised that one channel on a site which gets very little traffic had 7 clicks, but didn't make me a penny. It happened the day before yesterday. Anyone have any idea why this might be?
0$ clicks happen for a variety of reasons - CPM ads, PSA ads, or just google finding the clicks to be fraudulent for some reason (not necessarily your fault).
It could be that 1 user cliked 7 times and Google therfore decided it was too many to credit, especially now that they are much more strict.
i think you should email adsense support to tell them about it..you could be finalized/ban if that always happened..