I look at it at two levels. At the level of principle I think the spying is wrong and probably even illegal and needs to be stopped. The govt has to be called out if it abuses its power.
At the personal level I don't really care. It is not as if my life is so interesting that anyone would care. When I update my status on facebook there is hardly any response even from my FB friends. I think it is the same with most people. Your life is not so interesting unless you're a criminal or a celebrity. So the best way to avoid attentions is to act normally and blend in with the crowd. The more you try to hide your tracks the more you would draw attentions. People who go online a lot and get hung up about their privacy are like going to the nude beach and afraid of being seen naked. Fact is, most people are not as attractive in the nude as they think of themselves, no one would even notice you.
Of course if you have sensitive and incriminating stuffs don't put it on the cloud or social media (remember the idiots who photographed themselves with the loots after the London riot and posted the pictures on FB?).