I think its madness that people divulge so much information about themselves online. There is not even much of an illusion or pretense of privacy and anyone who expects it is lying to themselves.
Yet we have a generation of kids who are being raised on it, and their view of things will be drastically different. Their whole lives, and nearly every mistake, youthful indiscretion and error of judgement will be recorded for all to see for all time. It may lead to a massive lessening of standards, privacy, modesty.
I know a teen who unloads his adolescent angst over household spats to Facebook.
So I advise him like an uncle on Facebook. If it gets too uncomfortable for him, I guess he’ll sooner or later quit.