Glad to see you back Yuri. I've been checking everyday to see when you'd be posting again.

It's amazing how much of an improvement you can get just by following the standard basic advice isn't it. I'm working on improving a small AdWords campaign at the moment where my ability to change things is limited. All I've really been able to do is divide one ad group into five more targeted groups and I was able to write new ads for each group to test against the old. Basic stuff.

So far it's too early to say anything statistically meaningful, but I am seeing CPC decrease while CTR is mostly increasing except in one of the ad groups.

Thanks for sharing the results of the study.