CPC drop when adding ads

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On one site recently I was only utilizing one content ad and one link unit. I had enough content and decided to ad another content ad in the middle of the page. The ad in the middle of the page received only about 1/3 as many clicks as at the top of the page which was expected. What wasn't expected is that it seemed to carry the higher cpc ads. The ads at the top of the page cpc dropped about 60%. The result was a drop in earnings. Therefore, I
changed out the ad unit in the middle of the page for a link unit. I expected that would restore the cpc of the ad at the top of the page. But for the last two days that ad's cpc is still down.

Any thoughts as to the cause? Is it just a complete coincidence? Should I remove the link units or give it some more time to see if it will jump up again? Thanks for the comments.
#search engine optimization #adding #ads #cpc #drop
  • CPC has nothing to do with any of the things you mentioned.

    It's about who is bidding on the ads, how high, and which
    one someone clicks on.

    CPC has nothing to do with overall earnings anyway.
    What do you want, 1 click at $10, or 100 clicks at 50 cents?

    Focus on total earnings, targeted traffic, targeted ads.

    Paul
    • [1] reply
    • Thanks for your response. However, I'm not convinced that it has nothing to do with the things I mentioned. For example, if there are two ad units on a page advertisers don't need to compete to get the winning bid. Therefore the total CPC could be lower.

      Also, the CPC went down the day I added ad units so it certainly seems like there is a correlation. At some point I may add the second ad units back if the CPC doesn't pick up again. That way at least I will get more clicks.
  • Typically, from my experience, the top paying ads get displayed in the unit that shows up first in your source code. Check your code and make sure that the ad above the fold is first in the source code.

    Kevin
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    CPC drop when adding ads

    On one site recently I was only utilizing one content ad and one link unit. I had enough content and decided to ad another content ad in the middle of the page. The ad in the middle of the page received only about 1/3 as many clicks as at the top of the page which was expected. What wasn't expected is that it seemed to carry the higher cpc ads. The ads at the top of the page cpc dropped about 60%. The result was a drop in earnings. Therefore, I changed out the ad unit in the middle of the page for a link unit. I expected that would restore the cpc of the ad at the top of the page. But for the last two days that ad's cpc is still down.