This document discusses using social media, specifically Twitter, to engage learners, including introverts, in educational activities. It notes that 33-50% of people are introverts who may feel uncomfortable with traditional engagement methods like talking to strangers. The document then contrasts characteristics of introverts and extroverts. It explains how Twitter allows introverts to participate without face-to-face interaction by sharing thoughts and having their voices heard. Examples are given of how hashtags and tweets can supplement traditional Q&A and provide engagement during and after educational events. Research is cited finding higher engagement and grades for students who use Twitter during class.