An interesting site about the introduction of the railway, and its history. It's hard to believe people thought you would suffocate if you went more than 20 mph!
In this episode of Grey's Anatomy, the surgeons use twitter to update other surgeons across the country about their work. In return, other surgeons send back feedback. As a result, a life saving surgery is performed and a patient lives. All of this due to this social media!
As Clay Shirky states: "human nature has turned out to be fairly context sensitive...enough people's behavior becomes antisocial enoughto wreck things for everyone." Programs like this one will not work unless people are motivated to make it succeed.