Have you noticed anything fishy in your paid search campaigns lately? Unexplainable metrics? Unusual spikes in cost-per-click (CPC)? Or strange dips in click-through rates (CTRs)? You start going back through your PPC reporting to try to figure out what happened. Did you or someone on your team do something by mistake that could have caused a major change in the health of your account? You can’t put your finger on the problem. Frustration and confusion follow.