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