This week's episode of Designing Worlds presents a detailed illustrated studio discussion on the recently-established Open Sim-based virtual worlds of Kitely. Kitely uses a rather different business model from the land-based one that is employed by Second Life and the majority of worlds based on the Open Sim platform. Saffia and Elrik talk to Kitely CEO Ilan Tochner about Kitely and how it works, and to artists Karima Hoisan and David Denton about their work there. The programme includes visits to three worlds within the Kitely domain.