I was privileged to deliver the opening keynote at this month's FediForum, a conference for people building and supporting the open social web. My talk touched on what's happening now, drew on my experiences building Elgg and Known and investing at Matter Ventures, and gave participants three important questions to ask themselves as they build platforms and serve communities.Here's the talk in its entirety, courtesy of FediForum. The transcript follows below.IntroductionIf we haven’t met, my nam...