I also make a distinction between social network platforms and online communities. Facebook, a social network platform, is not a community. Its focus is on facilitating connections and user generated content; the business itself doesn’t do anything to facilitate community development other than provide tools for interaction. Communities are about relationship and history; within Facebook communities may form, but only where users are making that happen, and they could do that wherever the tools exist. In fact, many of the attempts at group-forming and community-building within Facebook don’t work, as when someone creates a group there, then fails to do early and ongoing development work. (I’m guilty of that, myself, but I know others who are building and finding effective communities within Facebook, where people stick within groups or causes, form relationships, and evolve a history of ongoing conversations.)