I am getting more clicks at my ads but Google is paying me less. some clicks are not considered! Why...
The reason is that your site have no unique content and you put valuable keyword and do more and more seo with high pr sites than you will see your earning will be boost automatically
they filter invalid clicks before final payments.. you must feel happy for not getting banned instead . dont click/ dont encourage others to click on your own ads
You will not get same rate for every clicks. For some specific keywords, the rate per click is very high and for some it is very low. And also the type of ads. For example unit ads having a higher rate than Image ads.
some clicks are invalid. clicks form same ip, less time , more clicks. Of course the look and design plays main role.