The document outlines 9 immutable laws of social media marketing for 2013. It discusses the importance of engagement in social media and outlines 8 stages of engagement. It uses a case study of the Facebook page for The Fresh Diet to illustrate how engagement was increased over time through various tactics like contests, ads, and putting a human face on the brand. The key points are that nothing happens without engagement in social media, and that the deeper the engagement with customers, the deeper the trust and bond with the company.