After reading the Time's article "Snooping Bosses" I have a few thoughts about it's content.
I do agree that when a worker is using a company phone and/or company computer the employer is well in his rights to monitor those for inappropriate behavior. Of course you don't want your employees to watch porn or spread sensitive information about the company online or to other companies. However when you extend that lack of privacy to the employees homes, I think that's the beginning of something very scary.
Every person should be allowed to have a personal life, and as long as that doesn't effect their work, then why does the boss need to know what you think of him or the job it self? I mean I've had jobs where I don't really agree with the management, like how the run things or just their personality. But does that mean I will not perform to the best of my ability? In my case, no. But if one employes feelings about his boss effect his work, then of course that person should be confronted with his poor performance.
So in my opinion, if the companies feel the need to snoop around, by all means do so, but only at the company itself and not the employees home.