This recent event shows how public Facebook, as well as other social media outlets, are becoming. These outlets are available to our bosses, coworkers, friends & family - anyone can get access to these accounts. With this in mind, one can almost state that nothing is private anymore.
People must recognize that what they say, through the written word, can have repercussions. I believe that thinking with a Judeo-Christian mindset - treat others the way you wish to be treated - can bring the least repercussions. Cyber words can never be erased; it's important to think about what you are writing online, and how that can be interpreted by all.