hmmm…
Well I did some experimenting last night and today…
I took a drastic measure and removed almost all banners…except one on the top.. (that changes from page to page.) Most pages have just text links.
The reason I did this was because I was worried about page load time…
Anyhow…funny thing… my click throughs have increased over night since I did this. I got just as many click throughs in 24 hours that i did all last month. Could be a fluke…but interesting none the less.