The document summarizes the key findings of a 2015 study on influencer engagement. Some of the main findings include: 84% of marketing professionals planned to use influencer engagement in 2015. While 49% found it somewhat effective, only 5% found it not effective. Identifying the right influencers, engagement tactics, and measuring performance were the top challenges. Popular channels were blogs, Twitter, Facebook and Instagram. Motivations for influencers included growing their audience and creating quality content. Most companies planned to keep their influencer budget stable in 2015 compared to 2014.