Last month, Social Fusion (a "social entrepreneur" incubator) put together a panel discussion on social capital at San Francisco's World Affairs Council. Panelists and participants included representatives from a variety of social investment organizations, and the conversation took a fairly deep look at the challenges, opportunities, and upcoming developments in the world of "venture philanthropy" and innovation.
The entire panel discussion is now available at the Social Edge website as both streaming (.m3u) and downloadable (.mp3) audio (links here go to full discussion; each section is also available in its own file). If you're interested in the future of social entrepreneurialism, you should definitely give it a listen.