Be sure to check your reports many times a day. A month ago I saw 15 clicks and 0$ earnings at one channel. I immediately sent an email to google support, reporting this. Today I recieved an email from G support that they have investigated my account and its click activity and indeed i had some invalid clicks. But they assured me that my account is in good standing and there is no possibility of terminating our partnership.
Nice to know. IMO this not only helps you from not getting banned but incase if u get banned due to a reason Google would check twice cos they know this person wont click his own ADS. But again Google is a HUGE company, do they check previous records?