What price freedom?
Having social tools doesn't guarantee change. There is nothing inevitable about it. Real change requires consistent changes in behavior and often manifesting those changes in behavior in public spaces takes considerable courage.
All it takes to maintain a repressive national regime is to shoot the occasional blogger. All it takes to maintain control over your corporate messaging is to make dissent a sackable offence. Moves like this one in Australia are likely to become more common.
We will all have to make harder decisions in the future about the balance between freedom and risk. We should start practicing now.