View the first 6:17 minutes of this TedX talk by Melissa Agnes, an American crisis management strategist. In her talk, she highlights how widespread access to smartphones and social media has totally changed the context for crisis management communications. The speed and reach of negative news on social media and 24-hour online news services means that businesses have to change their approach to crisis communications, by using social media proactively to build trust and credibility before a crisis occurs. (You may be interested in watching the whole video - 17:49 minutes in total.)