Mark Zuckerberg's
long-term vision for Facebook, laid out in a sweeping manifesto ,
sometimes sounds more like a utopian social guide than a business plan.
Are we, he asks, "building the world we all want?"
While most people now use Facebook to connect with friends and family, Zuckerberg thinks that the social network can also encourage more civic engagement, from the local to the global level. Facebook now has nearly 2 billion members, which makes it larger than any nation in the world.