AdSense Channels Tracking And Reporting: Case Study
This is an example of using channels to track the performance of AdSense units on a blog.
In this case, we have placed two similar ad units just under the post title. For the left one we defined the channel 200bleunegrust, and for the right one we defined the channel 200bleunegrudr, as you can see from the picture below:

One of the issues many people asked me about, was for how long should be these tests ongoing, in order to consider them relevant. This is hard to say, especially in the case of a new blog, where traffic is scarce, and you may need a couple of months before concluding anything.
When I first started using AdSense, I’ve set the limit for all my tests two weeks. I could have set a traffic limit, like 1000 pageviews, for instance, but I was eager to run lots of tests, so I decided to limit them in time.
Important: make only one change at a time! Otherwise, you won’t be able to do a proper tracking. If you make a couple of changes at once, how will you know later which was the one that brought you that nice increase of your earnings?
Back to our case study: after two weeks, I ran a report by channel, in order to see how my channels performed:

Unfortunately, Google AdSense’s policy does not allow me to disclose the CTR or the eCPM, but I can tell you that both channels had an equal number of page impressions, while the earnings for 200bleunegrust (the ad unit in the left) were $37.01, compared to only $24.84, the earnings of the ad unit in the right.
Moreover, I noticed that clicks on the left unit were paid better (on average), so I concluded that the left unit would perform better if it was alone on the page.
Now I did the second test: I replaced the left 200×200 ad unit with a 336×280 one, and I defined a channel for it: largerectratt (these channel names may seem strange to you, but they have a signification for me, and replacing them in the puropse of this exercise would have been too complicated).

After two more weeks, I ran the report again. Look at the figures above: for pretty much the same number of impressions, the earnings for this big rectangle module are bigger than the sum of the previous two small ones.
Conclusion: I’ve kept the big rectangle.
If I didn’t do this tracking, I would have never known that I could get more money for the same amount of traffic.
Ads parameters you can test for improving your earnings:
- size (ad formats)
- positioning (left, right, inline with the text…)
- colors (titles, descriptions, URLs, backgrounds)
- borders (with, without, square, rounded…)
Whatever you decide to test, don’t forget: test only one change at a time!
Other articles in How To Start Making Money With Adsense series:
- How To Start Making Money With AdSense - A Basic Guide For Beginners
- Got Accepted Into AdSense. How To Setup Ads On My Blog.
- Smartpricing: What It Is And How To Overcome It.
- AdSense Guide: How To Play With Ad Colors
More articles will be added, and links to these articles will become active as we advance with our AdSense Guide For Beginners series.
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This is a very good nonense guide to tracking differences in Adsense channels. I just realized the HUGE mistake I made by not tracking the performance over these units like this…
Oops!
Kenneth
InvestorBlogger’s last blog post..The 80/20 Principle: It’s just a rule of thumb
Hey, Kenneth,
It is better late than never, isn’t it? Too bad that the maximum number of channels is 200 per account.
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