If you do not know why you are getting $1 for 20 clicks at Google Adsense program, please see this picture.
Well, you can see at a lot of traffic is from Middle East, China… That is not good, because you need quality visitors to make some money. The best traffic is US traffic. You can block Middle East countries to get to your proxy.
Why ? Because you will be smartprice by google. If you don’t know what this mean, please go to google.com andy type “Adsense smartpricing”.
How to block this countries?
Go here, select the country(or countries) to block, generate the code, paste it in your .htaccess. That’s it.
Have a nice day !