Look, hello ... the real threat evidenced by the Snowden event is that people just like Snowden ... will and already have access to our data and can do with it what they please. No matter what you think of his "leak", "treason" ... whatever ... the real threat is evidenced by the million+ with access.
They will do nefarious things to individuals .. maybe they already are. If a mighty entity like the US Government is helpless before a puny, lone Snowden ... what do you think YOU will do when your time comes???