That happens to me when I accidentally click my own ad. I've done that a few times since I've had my account. The two possible explanations for 0$ for a click are that google determined that it was an invalid click, or that the click was worth less than .01$
That's haapened to me a couple times. I think the clicks were deemed invalid, though both times I wasn't at my site that day.
Happens to me too many times, guess it is either when you click on own ads or someone else is clicking whom are considered to be "invalid clicker" for some reason.
all of the sudden I am seeing more of these lately (like this week), and I never ever have clicked on my own, not sure why it started happening all of the sudden this week because I never noticed it before
that must be detected as invalid clicks..google has this kind of system detection..so you should report it to google.
It's rather normal .. just because they are low paying or the system is think that it should not to be paid
It can also be that the TS is viewing his stats and the earnings have not been updated but the clickcount has.