Influencer marketing doesn't just mean celebrity endorsements. Influencers can include social media personalities, avid reviewers, and even unhappy customers. Marketing expert Geno Prussakov walks you through finding these influencers, reaching out to them, implementing influencer campaigns, and measuring your success. Plus, get helpful tips for keeping your promotions legal with disclosures and getting influencers to "activate"—actively promote your product on social media and other channels.