Here’s a useful framework for evaluating or developing a social media strategy.
Social Media Strategy Framework (Werder, Helms, Slinger, 2014)
It comes from here:
Werder, Karl; Helms, Remko W.; and Slinger, Jansen, “SOCIAL MEDIA FOR SUCCESS: A STRATEGIC FRAMEWORK” (2014). PACIS 2014 Proceedings. Paper 92.