I think google hides your ad views.
I've been doing some comparisons on google's reporting through adsense and their always seem to be a bit off. On an old website of mine I threw adsense up and left it for about the last 8 months.
Since then I noticed that my page views (server side) does not match what google shows on my adsense side. Lets compare:
Server side stats
Sept 1st-9th
Unique visitors = 33
Number of visits = 95
Pages = 127
Hits = 362
Adsense Reporting Side
Sept 1st-9th
Channel top = 9 views
Channel bottom = 3 views
Channel menu = 10 views
Notice the numbers that are in bold and compare them. The adsense channel menu appears on every single page of my site. Now, the reports I have server side indicate that I have had 127 page views in this past 8 days. Since the menu channel appears on every page, you would expect to see that channel with the same ad views but it's not even close.
Now, I gave google the benefit of the doubt and figured they may have knocked my site down a bit because it has been dormant for many months so I began my second study. I even wanted to rule out the chance for software errors since I manage ad placement via programs
The new site I started is not centered around adsense but, for this research, I placed another channel setup in the menu so it was displayed on every page and watched it for 72 hours. The code was placed in the sidebar directly coded into the theme file exactly as google gives it to you.
Here are the second set of results:
Server Side
Pages = 1,487
Hits = 3,630
Adsense Reporting Side
Channel menu = 37 views
Once again, the menu appears on every page and this time there should be no reason why the numbers do not match up. My tracking software also recognizes all bots and things of that nature and does not report traffic numbers based on them, there is a separate section that reports me on their visits.
That number is pretty far off by a substantial amount. Just think, if they hide your page views, they can also "hide" something else. I'm not accusing anything, I'm just drawing from the information that is in front of me.
What are your thoughts? Have any of you experienced the same things?
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