I have couple of sites that I added as channels in my Adsense account and I know how much income I receive from them but the income every day is more than what I receive from these channels. I know it sounds like there is nothing to complaint about but what if my Ads are showing on some Adult or other Google TOS breaking site? Maybe someone posted my Client Ad on some site I am not even aware of and I receive income for that? Or maybe I had sold a site long time ago and the buyer did not change the Client Ad. Does any one know how to find out the URL where your Client AD is currently showing Ads and you where you are receiving Adsense revenue from?
Same thing happened to me a couple of months ago. I couldn't find where those clicks are coming from so I emailed to google and informed them about it. After some time everything went back to normal. I think somebody copied my site who forget to remove my ads.
what other possibilities? I'm having the same prob, the last time was yesterday, I got 18 total clicks, but only 14 was from the channels... I always added channel on my ads?
I'd contact Google and let them look into it - list the sites you do have and explain how many impressions/clicks you are getting from unknown sources.