On December 20, 2013, PR executive Justine Sacco set off a Twitter firestorm with her insensitive tweet - sent right before boarding a flight from London to Cape Town, South Africa - hoping that she would not get AIDS in Africa. In this "Digitally Speaking" segment, I talk about lessons we can learn from this "Tweet Heard Round the World":
- Think twice before you speak on social media.
- Controversies can provide opportunities to help good causes.
- Forgiveness is part of the human spirit.
WATCH: