Hi I have a question that is really important for me. If someone visits my site, and clicks any ad, I'll receive money. And what'll happen if he/she clicks 2nd ad? I suppose, I'll not receive anything, but still I wanna be sure. The same thing with the impressions. If anyone makes an impression and then clicks F5, I'll not receive new impression, right?
Why its bothering you? Are you setting someone to click on Adsense Ads on your site, beware you are asking for trouble from BIG G. Instead focus on how to build your traffic and you no longer need to bother about this silly thoughts. Hope you got me loud & clear.