The document discusses understanding the value of social media impressions. It finds that including social context and organic impressions with paid homepage ads can improve campaign performance metrics like ad recall, awareness, and purchase intent. Engaging ads that spark user interaction lead to increased reach both within a user's network and for the total campaign. While organic impressions are hard to scale, paid impressions can open doors for more engagement. The best approach maximizes a mix of paid, earned, and self-created media to drive success in line with good branding principles.