Maher gets away with more because he's a comedian. He's out to entertain; Limbaugh says equally inflammatory things, and just this weekend Ann Coulter called John Edwards an expletive. People are getting both numb and bored with these entertainer types who make inflammatory comments; Maher's going for viewers, Limbaugh's going for listeners and Coulter's trying to sell more books. But Robertson isn't an entertainer, he's this so-called theological leader and, presumably, when he talks, his 1,000,000 faithful viewers listen.
That's the only reason people get bent out of shape about Robertson. I think he sets a bad example for what he's supposedly supposed to be preaching. If he wants to get away with it, then he should quit pretending he's a man of God and admit he's in it for the money.