Reaching, engaging and converting the customer or target audience is at the heart of marketing. We learned about how to target audiences using various digital marketing channels such as website design, search engine optimization $($SEO$),$ paid search advertising, paid display advertising and social media. Using a minimum of TWO to THREE specific examples from the course $($activities$,$ individual$/$ group assignments, discussions or lectures$),$ explain which digital marketing channel is most difficult to target audiences on and why? What makes it particularly difficult to target audiences on this channel?