Is that shown at your ads for contents or ads for search? Adsense for contents = Invalid clicks or PSA (Public Service Ads) Adsense for search = visitors using your searchbox but they didn't click the ads inside the box. Thanks
Stats from yesterday... For content... How can i identify PSA's? What constitues an invalid click? I know that if I click on my own ad that would be invalid, but this was definitely not the case. Thanks
Well if one person clicked all those ads then it probably wont be counted, and im not sure, but if they all immediately clicked the back button you might not get credited for that either. The most likely cause is public service announcements being displayed.
PSAs usually contain very generic, non-targeted advertising. For example, "Gorillas," "World Wildlife Fund," "Donate to AIDS" etc. are some of the recurring ones I've seen. Or, you could have gotten CPM ads which pay by impression, not clicks.