If this story has any meaning to you, a deletion of your facebook profile is the way to go. You an download your data for a preview and to get shocked or comforted, and the link to salvation is here .
My old deacivated facebook was 18mb, including 2 videos of approximately 9,8MB, so not a big deal. But some private conversations, was there, of course.
And if people talk about BigBrother, and are angry about their government watching them, but freely gives everything they do to Google, youtube, facebook et al, ignore them. They must be stupid.