How I Dealt With Banner Blindness When Buying 327,996,501 Impressions

You launch a campaign, it gets a nice 1.5% CTR and then in 2 days it’s half that. “What is going on?”,  you ask yourself. This is a phenomenon called “banner blindness” and it means that people have seen your banner so many times that they are “blind” to it. How can you stop this?…