Use of Multiple Adsense Units Drops Your CPC

[georaza]

I personally observed that when you put multiple ads on a single page as its is now allowed by adsense than your impresions trippled and your click though rate dont tripple so the CPC rates reduced and I presonally observed this.

We should keep only one ad unit on one page to maintain good CPC.

any comment

[wheelie34]

makes no difference for me, 1 or 3 better chance of someone seeing them if you have 3

obviously the impression count will be x3 per page

[bnhall]

I reckon the if you're displaying only 2 ads (say a 468x90), then you've got the #1 and #2 bidders. If you're displaying 3 5x skycrapers, then you've got the #1, #2, ..., #14 & #15 bidders, increasing the chance that you WON'T get a click on the highest bidders, effectively dropping your average CPC.

[sirkei]

Running two rectangle ads and one image only sky scraper. So is it suggested to remove one of these ads? In order to increasae CPM?

My CPM is kind of low, only has about 10 cents per click and usually lower.

[alika]

So is it suggested to remove one of these ads? In order to increasae CPM?

Not in our case. We are running multiple ads in most pages, with Adlinks in few of our pages and our ECPM is a very healthy number

[ve3cnu]

I found that dropping one unit had a positive impact on what matter most, my earnings.

I went from 3 units to 2. I think my page look less spammy as well.

[Jon_King]

AdSenseAdvisor said at one time to monitor overall revenue and judge the multiple ad units that way.

I wanted to use additional blocks on long and verbose pages but it didn't work the way I had hoped. In three seperate tests run 90 days apart for 30 days each, multiple units resulted in reduced overall earnings.

[birdstuff]

Some sites do better with just one ad block per page, others do better with multiples. As with everything when dealing with AdSense, what works well on one site (or even page) really sucks on others.

One of my sites has hundreds of short, tightly written mini-articles (how-to's) that barely cover the area above the fold. If I had ads at the top, on the left and at the bottom the page would be mostly ads and it would appear to be a "made for AdSense" site even though it's been online in its present form for over 6 years. The CTR would probably be high, but I'm guessing the CPM would be low because of all the lower paying ads. I have ads in the right-hand margin only and the site does extremely well with AdSense.

I have another site that has long articles, many of them 3000-5000 words. On these pages I have a leaderboard at the top, a small rectangle in the middle and another leaderboard at the bottom. After I was allowed to add the extra ad blocks my CTR and total earnings from that site went up by almost 60%.

It's pretty hard to generalize about anything accurately when it comes to AdSense. The only thing that works across the board is doing extensive testing to see what works on each site (and even each page when possible).

[badtigger]

Some sites do better with just one ad block per page, others do better with multiples. As with everything when dealing with AdSense, what works well on one site (or even page) really sucks on others.

This is the single, best piece of advice I have come across here. ever.

[incrediBILL]

I have 2-3 ad units, my CPC may be down but my total earnings are skyrocketing.

Why? The CTR per PAGE is up, I'm getting more clicks per PAGE than I was.

[yoyo8]

I have 2-3 ad units, my CPC may be down but my total earnings are skyrocketing.
Why? The CTR per PAGE is up, I'm getting more clicks per PAGE than I was.

One idea is that in a few weeks smart pricing will kick in and your cpc will adjust downward due to the increased clicks being worth marginally less than before, possibly due to those additional clicks converting less well.

[incrediBILL]

I've had 2-3 units for a LOOOOONG time <months>.....

If smart pricing was gonna kick in, it would've already kicked I'm assuming.