KOL (Key Opinion Leader) marketing in crypto works by leveraging influential figures to endorse or discuss a project. KOLs have trusted voices and a dedicated following, making them ideal for promoting tokens or ICOs. Campaigns usually involve content creation such as reviews, interviews, educational posts, or live sessions. Selecting the right KOL requires analyzing audience demographics, engagement levels, and relevance to your niche. Performance tracking is critical: monitor engagement, referral traffic, token purchases, and community growth to assess ROI. KOL marketing is particularly effective when combined with broader strategies, including social media, airdrops, and community events. The credibility of KOLs can accelerate adoption and generate authentic hype.