This document discusses social influencer marketing. It defines a social influencer as someone who has the potential to influence others due to their communication abilities and social networks. It emphasizes that influencer marketing requires focusing on understanding customer purchase decisions and those closest to them, rather than large social media followings. It also stresses that influencer relationships need to be nurtured long-term through genuine engagement and advocacy, not one-time promotional deals. Success requires identifying different types of influencers and measuring impact on sales, customer lifetime value, and movement along the customer journey.