ROI is measured in terms of:

• contacts,
• referrals,
• and conversations with regard to social media marketing.

Think of it this way- it’s like going to lots of networking events all the time.

It’s about starting conversations online that turn into business offline.
The best measure of ROI is to make sure you track exactly where your new business is coming from.
The more often it comes from a website, the more likely it is new business resulting from your social media marketing campaign