Not all Ads filled out in AdSense

[paul]

Another quick question.

Does anyone know if there is a reason why say out of a four ad unit you only see one or two ads.

1. Is this because of lack of inventory (this could be true, as many campaigns are near the end of their monthly budget this week)
2. Is it because of the lack of matchable ads to your content.
3. Or is it because these advertisers are paying more (or much more) than competitors

Theories or answers welcome !

 

[mneylon]

I think it's probably a combination of all three

 

[paul]

I guess that was the answer I had in the back of my head. Typical Google, eh ?

Has anyone else noticed the same ? Funnily enough my earnings haven't varied much because of this factor.

 

[paul]

Again at the end of the month it seems that, there are less ads and revenue is down a little (15%-20% or so). I guess I now know when is the best time to start my AdWords campaigns

 

[Gavin]

I would also say all 3 but depends on the niche, as always.

 

[paul]

True I guess. Also it depends on whether these advertisers use the GEO target ting option on their campaigns too. So I may not see it with a German IP.