Salon writes, Put aside, for a second, whether Oscars host Seth MacFarlane's comedy routine Sunday night revealed him as a sexist boor or just really, really unfunny. (Or both!) A more interesting question might be whether Twitter has evolved into a button-pushing comic's worst nightmare. Funny or not, you will get called out on Twitter whenever you step over what anybody considers a politically incorrect line. That's what we call a tough crowd. Maybe too tough. A case in point: With the Twitter masses already on edge after several hours of jokes about eating disorders, domestic abuse and boobs, MacFarlane…