[rexgallorum2]

This shouldn't have been voted down. It is actually a sound question and one that should be examined.

Edit: I looked at the previous replies. All of this talk of 'society' this and 'we' that is of no use whatsoever when you are talking about global phenomena and companies like Facebook/Twitter/etc. Under the given circumstances, the ethical questions are much larger. The problem is probably totally intractable.