Some good points come through in this thread. Each to their own opinion and everybody is making valid points based on their beliefs, needs, situation.
But....it seems that it has been forgotten that Big brother is watching you anyway, whether you have FB, email, bla bla or not.
Most people have a mobile phone of some sort, credit cards maybe, car registration, rent or mortgage agreements, employer, ++++ not to mention millions of cameras watching you. So no point in being paranoid - you're being watched anyway. And if you ain't done anything wrong, what the hell is the problem
Of course you have nothing to worry about with companies having all of this information and data about you as it has never been known for servers to be hacked into and personal data stolen, or employees farming the data and selling it on, or the companies themselves making extra money by selling it to 'Scum Claims Solicitors Are Us'. For Sony, LinkedIn the hacking didn't really happen did it, it was all a publicity stunt.


Hmm.
The point is, your personal data is floating around anywhere and everywhere already. As individuals we can take appropriate precautions to try to limit it, to a greater or lesser extent depending on our personal viewpoint, but it has happened, is happening, and will continue to happen.
Of course I know my email address is sold on. So what am I gonna do about it? Oh, yes, stop using email. Whilst there, I will get rid of my mobile phone, credit cards and basically anything else that carries personal data
