There are some posts above from guys I respect and listen to on pretty well every subject. But in this case, I think you may be being just a shade paranoid.
FB is successful - hugely successful, in fact - not because it is satanic, underhand, deceitful or lacking in transparency but because it has first mover advantage (ok first mover to attain critical size) in a field, social networking, which has proved extremely popular.

Parallels with that other 'evil empire', much beloved of conspiracy theorists - Microsoft -spring to mind.

FB, perhaps more than any other corporation, knows the power of good or bad publicity. I would argue that, if for no other reason than to protect its reputation, it is not up to the kind of skullduggery suggested by some contributors above.

if you’re wondering why such a high value is attributed to the corporation, then just take a look at the figures

http://en.wikipedia.org/wiki/Facebook