Here is a link that showcases a few examples of social media disasters:
As one can see, even though social media is a powerful marketing tool, it has the potential to backfire more often. A business that plans to adopt social media into its environment should be well prepared and understand all the risks that goes with it. It must be ready to train all its employees in the basics of effective social media communications and be quick in responding to negative feedback from customers. Without adequate preparation, social media may cause more harm than good in the long run for a business.