I’ve finally found the Holy Grail to exclude mobile apps on the Google Display network from showing your ads. Don’t worry I’ll share it with you and make sure you know exactly what to do to make it work. But before I do let me tell you what led up to this discovery and why I think it is so important.

Mobile App Traffic on GDN Rages Out of Control

Over the last couple months I have noticed a big uptick in mobile app traffic on GDN campaigns in AdWords. One of our clients in particular saw a 422% growth in clicks and a 480% increase in Cost overnight. That isn’t a small change! Interestingly, 98% of the change came from mobile apps and AdMob served ads.

Guess what happened to their GDN conversion volume?