this my 4th account disable in last 6 months .. I Don't click my ads but i Don't know what is the problem It has come to our attention that invalid clicks and/or impressions have been generated on the Google ads on your site(s). We have therefore disabled your Google AdSense account. Please understand that this was a necessary step to protect the interests of AdWords advertisers. As you may know, a publisher's site may not have invalid clicks or impressions on any ad(s), including but not limited to clicks and/or impressions generated by: - a publisher on his own web pages - a publisher encouraging others to click on his ads - automated clicking or surfing programs, or any other deceptive software - a publisher altering any portion of the ad code or changing the layout, behavior, targeting, or delivery of ads for any reason These or any other such activities that violate Google AdSense Terms and Conditions and program polices may have led us to disable your account. The Terms and Conditions and program polices can be viewed at: https://www.google.com/adsense/localized-terms?hl=en_US https://www.google.com/adsense/policies?hl=en_US If you have any questions about invalid activity or the action taken on your account, please do not reply to this email. You can find more information by visiting https://www.google.com/adsense/support/bin/answer.py?answer=57153. Sincerely, The Google AdSense Team
The fact that you've had 4 accounts is enough to get you banned.. Just think how much money you could have made (and actually KEPT) if you'd been using another system all this time.