Internet -- a private forum?

There are so many totally foolish people.  Sororities look online to see if potential rushies have publicized actions with which the sorority would not like to be associated.  A local teacher gets fired after publicizing private school details online, and gets divorced after typing out and publishing fantasies about an affair with another teacher.  Those people can't get it through their heads that the internet is open and public.  Education's no help -- when employers check online to see what kind of behavior prospective employees see fit to describe in public (and may well continue to describe in public once they are functioning as a representative of their company), Ivy League students describe it as an "invasion of privacy" and whine that "employers should not have access to that."  Fools.  Don't want people to know who you're sleeping with and how much you drank last weekend?  Then don't scrawl it on walls and billboards, phone it in to the newspapers, or otherwise broadcast it to the interested public, idiot!