$48 billion was spent on digital display advertising in the US in 2018. That’s up 5 percent from just a few years ago. Unfortunately, advertisers are not aware of the need to focus on audience quality, and this can impact whether a campaign is successful or not. Without investing in audience quality, consumers can be bombarded with messages or confronted with irrelevant ones, annoying and frustrating them. This results in missed opportunities and wasted resources. Read more.