This document summarizes the findings of a survey of 100 marketing directors and social media professionals on influencer marketing. It discusses common use cases for influencer marketing like brand awareness, thought leadership, and customer retention. It also outlines opportunities like increased word-of-mouth and sales from influencer marketing. Challenges include limited data access on platforms and identifying influencers. The document provides advice on influencer identification, engagement, and measurement and discusses effective social media channels and tools for influencer marketing.