Multiple AdSense Ads on a Page Not Showing

Nov 22, 2004 • 4:19 pm | comments (2) by twitter Google+ | Filed Under Google AdSense
 

I recently launched a new site and I noticed that the AdSense ads were not all showing. I have noticed in the past that adsense ads, when first launched, showed white blank spaces. But after a minute the ad would appear. This new site, was the first where I put the maximum allowed, three, ads on a single page. I knew the issue was not an issue with Norton Software Blocking AdSense because I tested this on several operating systems and browsers. So I started a thread over at Search Engine Watch forums named Multiple Ads - Different Sizes - Should it Work?.

I at first thought the issue was that Google might not allow different sized ads on the same page. But that didn't make sense, so I asked in the thread. Soon after I received some excellent responses. David Wallace quoted the AdSense Support page:

Can I display more than one set of Google ads on a web page?

Currently, AdSense publishers may place up to three ad units on one web page. Our system will detect the multiple ad units and will display unique ads to each ad unit. This system is optimized for pages with highly targeted Google ads - some pages may not show ads in the second or third ad unit. In this case, the ad unit will show as a transparent box, or will contain any alternate ad or color specified in the ad code.

But Jenstar, WMW forum moderator gave us a gem.

When you ad multiple ad units to a page, I have noticed that it will usually only show ads in the first ad unit - sometimes for days - before they begin appearing in the second and third. Not sure if it is due to an inventory issue, a low priority for newly added multiple ad units, or perhaps they respider the page to get different keyword combos for each ad unit, but I have noticed this many times. It is rare that I see ads in the second and third ad units when viewing a newly uploaded page for the first time - and those ad units without ads will seem to vanish (to prevent three PSA ad units appearing on the same page). So it is a consistent problem, but one that often makes publishers go back and recheck their code to try and figure out what the issue is.

The problem should correct itself within a few days. On rare occassions, there could be a consistent ad inventory problem with not enough ads available, and those second and third units will remain blank. But a quick check with the AdSense Preview Tool can give you a quick idea if there is inventory and whether those ads will eventually show up.

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Comments:

Jamescpayne

03/09/2011 03:15 am

one of my pages won`t show but one psa ad, but if i view it from another source like networked blogs then it shows all three ads.

Igeorgiou

05/17/2011 05:14 pm

 I have a website with a lot of different sections and all pages contain three google ad units. Last week we started organising the ad units by creating new ones for each section and for each position, naming them properly in order to produce some reports and proceed to adsense optimisation. But the problem is that now we see that only few of the ad units record pageviews and clicks. They all appear on the site in the correct position (we also have checked the code and our site uses the correct (new) code for each ad unit). The problem is that we see zero pageviews (its been 4 days now that the new code is running) on the performance report. More weird thing to come: We noticed that in most cases only the first ad unit in the html shows pageviews (for example the 728x90 which comes first in the code). This is not the rule since in a couple or three sections we receive pageviews in the report for all placed positions.  Any good ideas for the problem? Thanx!!

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