<p>In Part 2 of our episode on Kanter’s <em>Commitment and Community</em>, we examine in depth her conclusions about the distinction between “retreat” and “service” communities and why the former tends to fail while the latter shows greater chances of long-term success. However, we also debate on the meaning of “success” as being more nuanced that merely duration of the commune over time. We then discuss the implications for this study for the present day when Internet-based social movements of all forms and perspectives can be formed readily – but how and why do they last?</p>