“Baio is a thinker, a hacker of big social patterns and an admirer of the collective intelligence that emerges from groups of people acting independently on the web. We sat down with him this week and discussed some of his ideas about what makes good social software grow.” Build on top of existing communities. Weave rewards into the activity flow as a integral part. Make common work (grind) and preferred work (play) both add to the experience. - × × ×