It was pretty dumb for Roseanne Barr to tweet racist comments on her Twitter account which blew up in the media like wildfire. Her show, which had made $45M already and was going to pay her $60M next year, was cancelled in a matter of days after people started #boycottABC. This Wired Mag article explains how we're in a whole new era from the 90's.
pic by Mario Anzuoni for Reuters