Can Someone Explain This?

[greenlake]

I have a site that gets about 3,000 visitors/day ( mostly china traffic) according to server/host company report and only HALF of that as "impressions" on Adsense report.
How could this gap be explained?

 

[bluearrow]

Its normally im not sure how it happens but i have seen it always.maybe Google doesn't count search engine bots and things like that.

 

[gmtfan]

Sometime google ads does not display on your web

 

[sufi]

Yes search engine robot hits aren't counted and sometimes no ads show up when they do not have relevant ads matching to your content.

 

[bojianh]

Mine too. There's always a huge discrepancy...