So to answer the FP author - Don't bother. Take a few basic precautions, but just realize that in the modern world, your privacy depends almost entirely on blending into the background noise, not on adopting increasingly complex technological means of concealment.
This really is the best advice. The thing is we are tracked so much and by so many different sources that there really is no hope of maintaining privacy anymore. Sure if that was my goal, to "live off the grid," I could probably do it, but not without sacrificing most aspects of a normal life.
The thing to realize is that you blend into the background noise. In a world with nearly 7 billion people, its not hard to do that. In fact, that is in itself a type of security.
Analogy time (because I love them): If you are at a sports game and talking with your friends, are you worried about others overhearing your conversation? I mean sure, the people next to you (someone like your mom on Facebook) may hear what you are saying. But will the cop at the bottom row? Yea, sure, he could hear you if he wanted you. And watch everything you are doing. But will he? No, because you are just one person in a sea of thousands. On the other hand, what if you had a ski mask on and were whispering secretively to everyone? Yea, sure as hell he will pay attention then.