I think there is just a communications breakdown bewteen scarcasm and real.
Most of the stuff is meant for a Joke but since there is no way to tell the difference online people take stuff meant for a Joke seriously.
That's why a while back i started a thread about using a different font for scarcasm and jokes so people would know the difference but i didn't get to much feedback on it so i'm thinking that either it's a bad idea or people just didn't read the thread.
I think a differnet font or even color would go a long way in fixing some of these mix-up's online about jokes and stuff.
That's just my opinion on the subject.