I run a website based in the UK, I've noticed that between 8am and around 5pm i have a good variety of well paying ads, problem is after 5pm most of these ads disappear and im left with lots of PSA's or blank spaces. Any explanation? This happened after I changed from text skyscraper ads to image ones on the majority of my pages. Btw this doubled my ctr, i then move these ads to the right hand side which increased my ctr 5 times. Anyway im still bemused about the disappearing ads, any help?
Nope, never heard of that. Good move on the adjustment to your ads. I did similiar to mine a week ago. Amazing what such a small change can make. G