Can anybody help me i have daily 5000 to 8000 thousand impression but no earning in adsens plase help me what i have to do
Google should be happy if you are making money with adsense, cos then you are probably a quality publisher. Quality publishers is GOOD selling point for google, so unless you consider your sites not quality : )) then you have to watch out!
there is no such thing as triggering point, in fact the more you make the better it is for you. It takes same time to scruitinize a site making $1/ day and $1000/day and click tracking is automated