It has provided useful (and sometimes surprising) demonstrations, for conference and meeting participants, of the engagement of broad and under-represented communities with issues under debate. It has brought divergent perspectives helpfully into play, sharpening discussion and leading to proposals with broader reach and impact. In a time of dwindling travel budgets, it has allowed key, already well-networked community members to participate in meetings from afar, with little technical overhead and less disruption to their working lives than formal, virtual participation would require through an interface like Second Life.
via nowviskie.org