If this has been discussed elsewhere my apologies.
Is it the norm that for every few clicks on ad's the revenue per ad click goes down?
I've noticed that trend on my blog. Is that because as Adsense says, they locate the highest paying ads and put them on the blog, so then once they are clicked, then the lower paying ads appear?
If that's the case, would the same highest paying ad at the start of the day not reappear to a new visitor?
See what I'm getting at?
Appreciate the clarification on how all this ad revenue is supposed to work.
Many thanks!