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Changed Ad sizes -- earnings down by over 50%!

     
3:03 am on Jul 5, 2014 (gmt 0)

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Hi, we changed our Google adsense ad sizes on our site from mostly 160x600 to 336x280 and 300x250 ads.

What we noticed is that the clicks went down and our earnings went down by 55% or more!

What can be done to fix this situation? Thanks a lot in advance!
3:09 am on July 5, 2014 (gmt 0)

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Did you lose a bunch of Placement ads targeted to your site?
3:12 am on July 5, 2014 (gmt 0)

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How to find out placement ads?
3:16 am on July 5, 2014 (gmt 0)

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Pull up your performance reports stats and click on Targeting Types in the left hand column.

Compare a time period before you changed ad sizes with what is happening now.

Changed Bid types to Targeting types, sorry about that

[edited by: ken_b at 3:20 am (utc) on Jul 5, 2014]

3:16 am on July 5, 2014 (gmt 0)

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Thanks will check and let you know.
3:18 am on July 5, 2014 (gmt 0)

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Opps...

that should be Targeting Types
3:18 am on July 5, 2014 (gmt 0)

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It shows over 80% were CPC bids. rest cpm, and cpe, and active view cpm.
3:21 am on July 5, 2014 (gmt 0)

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I should have said Targeting types, not bid types, try that.
3:22 am on July 5, 2014 (gmt 0)

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Ok targetting types shows that placement ads earned only about less than a dollar and rest are interest based, contextual.
3:28 am on July 5, 2014 (gmt 0)

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OK, well if those stats are from before you changed ad sizes that doesn't seem to be the problem.
3:31 am on July 5, 2014 (gmt 0)

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Clicks went down. The 300x250 ads are just not getting good clicks! 160x600 adsizes were better wrt clicks.
3:36 am on July 5, 2014 (gmt 0)

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How do the ad locations on the old and new page layouts compare?

If you scroll down the page, are the ads in about the same location?

How about sideways, right side, left etc?
2:41 pm on July 5, 2014 (gmt 0)

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You might need to give people time to get used to the change, and it also might be that 160x600s do better on your site. I run both on mine, and the 300x250 on the right always does better than the 160x600 on the left, but I've always run them like that and people are probably used to it.
3:04 pm on July 5, 2014 (gmt 0)

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If the 160x600 does better, then stick with it.
4:11 pm on July 5, 2014 (gmt 0)

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It's a long holiday weekend in the states. Maybe not the best time to make decisions about ads.
7:32 am on July 6, 2014 (gmt 0)

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Can you guys give me some example sites which are using 160x600 ads and look good in layout?

The primary reason for removing 160x600 ads was design and look of the pages. We added 300x250 ads on the right.

Thanks for the advice!
1:05 pm on July 6, 2014 (gmt 0)

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Well no, because no links, remember?
3:14 pm on July 6, 2014 (gmt 0)

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We added 300x250 ads on the right.


Generally, at least in my experience, ads on the right do not do as well as ads on the left. Have you looked at the Adsense heatmap?
3:45 am on July 9, 2014 (gmt 0)

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Hi the earnings today were normal.

Does it take time for Google Adsense to optimize ad delivery to a site if the ads sizes change?

Thanks!