This document outlines six key performance indicators (KPIs) for measuring the success of social media marketing: 1) Comments, which measure engagement and feedback, 2) Impressions which show how many times a post was seen, 3) Click-through rate which is the percentage of clicks on calls-to-action, 4) Site traffic and referrals from social media posts, 5) Lead conversion rate which shows how campaigns translate to sales, and 6) Cost per lead to ensure campaigns are cost-effective.