Does AdSense ever miss a click through? I've looked at my log and saw that a visitor came to my site, went away and came back a second later. I think they clicked on an add and them came right back. I've seen this a number of times, but no AdSense that day (low traffic). I don't know for sure if this is what is happening but I'm a little suspicious. Any comments? Any way to know for sure? And even if you could know, what could you do about it? (Nothing pobably)
You can do nothing about it, but it's probably nothing anyway.... Also if you have linkunits, people might have clicked one of them, got to the google search page with the ad's and just clicked back to come back to your site...