Image credit

While some may argue that social networking tools, like Twitter and Facebook, are a waste of time, and others consider them to be innocent fun, there are a few people who would say these innovations are so much more. For example, one woman saved her friend from home invaders after seeing a plea for help on Facebook, while another was rescued by emergency personnel after tweeting for help when she was injured and lost in the woods. Learn about seven real-life cases where a tweet, status update or an application was a lifesaver.