To get a decent picture of your social programs' performance, measure three types:
 

• Business impact: Show social programs' deepest value. The hardest type of social measurement is also the most important. This is the quantitative view of your social efforts that matter most to executives. Start by measuring attribution to assign a proportion of revenue to social programs or measuring social's impact on brand health.   
• Marketing impact: Measure how well social programs serve strategic marketing goals. Quantify whether social is helping you meet your objectives across the six phases of the customer life cycle: Discover, Engage, Buy, Use, Ask, and Engage. Proving performance at this level is crucial for marketers responsible for setting strategic priorities and channel allocation. Measure how well you're achieving your stated marketing objective in a specific customer life cycle phase and how well you're guiding customers to the next phase of the life cycle.
• Content impact: Track topic resonance to improve your social content execution. You can still track likes, comments, and shares but this most rudimentary form of social measurement doesn't tell you anything about social's effect on business outcomes. Your CMO shouldn't care about it but it does help staffers on the frontlines understand which content is capturing the attention of your social audience. Use these metrics for content relevance only and don't benchmark against your competitors.