If a million trees fall in the forest and nobody hears them, do they make a sound? What about a million impressions that are served but ignored?It’s important for advertisers to ensure their video ads don’t just reach their audience, but also capture their attention — at scale. Today, I’m excited to announce new research and reporting features to help advertisers do just that.Reach is a critical measure of scale for advertisers. To help you know how many people you’re connecting with, we are introducing Unique Reach in AdWords. This update allows you to see the number of unique users