03.08.06
How not to lose your AdWords impressions (and clicks!)
I suppose I was being clever or naive - one of the two. One of my AdWords campaigns was doing quite well already when I decided to add another ad group to it. Now, what’s wrong with that you may ask?
Thing is, I wanted the new ad group to direct visitors to the same web page as the old one - and to run them both concurrently. I experimented with new text for the ad and set the url to the same one as my other ad. It worked a treat, with both ads working up to a healthy CTR until.. it all went dead, not a single impression let alone a click!
It took a few days of complete inactivity and an email to the nice people of AddWords Support to find out what happened…
I had fallen foul of Google’s cutely-named Double-Serving Policy which I had obviously missed during my various intellectual battles with the guidelines!
I have now deleted the offending group and everything is good as pie 
For a quick refresher on the Google AdWords guidelines, click here