Bokardo has a good post recently, about finding the primary pivot of your social media site where he notes:
Over time, the primary pivot of social software has shifted away from the topic thread and toward the person.
As he notes, there are three possible pivot points for a social media site:
I think we’ll see more endemic social media sites making the primary pivot around the core elements of the subject over time.
Would like to hear from readers good examples of the three classes of pivots