The document discusses social coordination and collective action enabled by social technologies. It covers several key points: 1) People actively use social media like email, meetup sites, and mobile phones to coordinate social activities with friends and find others interested in similar activities. 2) New technologies allow for "mega-collaboration" where millions of people can work collectively towards goals through user-generated content and grassroots organizing. 3) Mobile phones in particular enable "hyper-awareness" and "smart convergence" as people can easily update their location and plans in real-time to coordinate social events.