No i don't use the optimize ads. I want to give chance to my other keywords. And yes, on my case, it's been helpful.
If you have your ads optimizied Yahoo is supposed to display the ad with the highest CTR, so why would you give your other ads a chance if they have a lower CTR? Are you saying that if you have "optimize ads" ON then it won't test the other ads? If they don't test the other ads how do they know which ad is optimized to your keywords? I'll probably have to speak to Yahoo about this. I figured they test every ad to find out which one is optimized and just display it more. I'm not sure what you meant when you said, "give your keywords more chance". Did you mean give your other ads more chance? I don't think optimizing ads makes any difference on your keywords. It's your keywords that makes a difference on your ads. If your keywords are irrelevent in that ad group your CTR will be low. This is all that optimizing ads is relevant to is CTR correct?