Do you have any examples to back up this statement, other than people getting fired from their jobs for foolishly posting incriminating information online? It seems to me that most of the alarmist reactions to social media are based on completely theoretical "slippery slope" arguments that assume we're heading straight for an Orwellian future. That may be true, but so far I haven't had any of my friends scooped up by the secret police for Facebook-related thought-crimes.