when your doing something on the net like looking up information for an essay or talking to a friend on msn but end up getting distracted looking @ porn ... can also use pr0nstracted if you think it sounds better
When a website (particularly a forum/discussion site) has been infiltrated by porn, spammers, or other ill-meaning idiots who post completely irrelevant, useless material, thereby defeating the underlying purpose of the site.
orkut has a hell of a lot of good forums out there for people to connect, but too many of the popular ones have been totally pornitrated!