How often are you all experimenting with ad placements, colors, positions, quantity, etc.? When is it time to stop? Do you try to fix it if it's not broke? If ads are performing well do you still experiment? Discuss.
Once i get a decent click thru rate i stop. It all depends on type of site how many clicks you will get so you have to judge your own success. If click thru rate drops i change colors but not untill it drops. I worry more about filtering low paying ads after i get good click thru rates. I set goal on amount per day i want and if click thru is good work on traffic more than anything.
I like perfect work and I think the current Blending on my Sites is perfect I just play with Ad Placement and stop it when I get a Decent CTR
I stop experimenting once my CTR reaches a good point. If it drops, I try mixing things up again. It's worked well so far.
i'm checking the results every day because everythink is changing daily. if you want to get success on adsense , i suggest you to check the results every day