"Social Reporting was a great addition for Google Analytics. It’s ultra-important to understand the impact of social traffic, what’s being shared across social networks, which influencers are sharing your content, who is engaging that content.
It’s also important to analyze specific pieces of content that are being actively shared across social networks".
If you want to find and analyze data for a specific post read full tutorial here: http://www.hmtweb.com/marketing-blog/how-to-use-social-reports-in-google-analytics-to-analyze-specific-blog-posts-or-content-tutorial/
Via Antonino Militello, William Deckers, Aris Spanos