How do you manage a community, grow it, and sustain it? Threadless has done it since 2007 by crowdsourcing its T-shirt designs and selling the best ones. Harvard Business School professor Karim Lakhani talks about the challenges, exciting moments, and ultimate dilemma in the case: When do you grow the community vs. when do you go national and make the big money? Many companies consider how to bring elements of community into their companies. Learn more about this fascinating journey from Lakhani's case, “Threadless: The Business of Community.”