Duncan Watts has a great blog post on HBR that talks about the Occupy Wall Street movement. Specifically, he has noticed how perplexed many of us are by the fact that the movement itself has no single, identifiable leader.
Here's what I love about this article: "Leaders, in other words, are necessary, but not because they are the source of social change. Rather their real function is to occupy the role that allows the rest of us to make sense of what is happening. I think the top of the hierarchy is less about controlling/directing and much more about helping everyone else make sense of things. They are the keepers of the story. We make sense of the world through stories."
Want to be an effective leader? Share stories and listen to the stories of others. Oh, and BTW -- we are all leaders in one way or another. Read this article for more insights.