Time spent on the site. Bounce rate. (per website?)
Ratio of blog comments to blog posts
ROI of Social Media ROI is the measurement of the money in and the money out – that’s it . What is the money in? Your time. What is your billable worth per hour? Figure that out and keep track of how much time you spend on your social media efforts. What is the money out? True conversions or sales. The act of someone getting off their duff and handing you some cash for your products and services because of your social media efforts.