In most cases, i have found that clicks for which no revenue is genertaed are marked as Invalid clicks.But if you have a doubt that some one behind the scenes is doing the wrong act then you must report is to Google by fillin the Invalid clicks form
Sorry for late but I found the reason why it happened to my website. We know blogger blogs are getting redirected to regional extension so users clicked my website iplsaga.blogspot.in ads but in adsense authorisation setting ads were of iplsaga.blogspot.com So they didn't counted it..
If they are invalid clicks, beware your adsense account is in a risk. If all the 6 clicks came from one IP address, block that IP address to not allow to visit your site again.
Yes, don't worry, your explanation will never be read and you'll get more and more messages about everything stupid, your best solution is to unsubscribe yourself from this thread so you'll never get anymore bothering from new, useless answers..
You may have received some invalid clicks. Google doesn't credit your account for invalid clicks, but they will appear in your reports.
It may happen if you have a lot of Impressions which is makes those 6 clicks too less to be paid. The amount that get paid is a ratio between ad impression and clicks on it.