Every historic movie about an individual begins with a diary. That written record of the person's life, challenges, and perspectives. Before paper, we had cave drawings, and tales written in pottery. Somewhere in the 20th century we seemed to lose this tradition of story-telling and leaving a legacy for the next generations. Very few people saw the passing of their grandparents and great-grandparents followed by a discovery of a journal that gave more insight into who they were and what they thought about.
With the loss of that written word, I feel we lose a bit of where we came from, and who we can be. The fast-paced consumerism lifestyle prevents us from stepping back from the world and writing down our perspectives. Even when we find the time, we worry if something is politically correct to say, and we keep that thought to ourselves where it will die. Sure, some thoughts should be kept to oneself and be forgotten.
Social networks can be that written and visual history of your life, which can be shared and remembered. Let your innermost thoughts spread for everyone to enjoy and get to know you better. Show the younger generations to come that our challenges are nothing new, and that they can learn from what was done before them to make the world better. Don't fear what you post will be read by your family, embrace the fact that they can get to know you better and be part of your life.
And perhaps, one day in the future a movie will be made about you which begins with the reading of a Twitter stream. Be immortal.