Brittany Berger provides tips on finding influencers who casually mention your competitors. These "casual influencers" are not necessarily loyal to or customers of your competitors but share their content occasionally. They are well-suited for building relationships with as they are familiar with your industry and likely open to conversations. The tips include using social listening tools to find casual influencers of competitors, looking for infrequent or one-time mentions, potentially negative comments, and then reaching out to invite comparisons, address problems, or suggest collaborative content.