I wouldn't do anything to stop anyone from their right to free speech. I don't want anyone trying to stop me from speaking openly, and protecting my right to do so requires that everyone else's right is protected, too. It doesn't matter if it's done on TV or not. It doesn't matter if I agree with what's said.
Many people believe being gay is wrong. Many people also believe being a Christian is wrong. It's their right to say so, just as it's anyone's right to openly disagree. If openly expressing your beliefs isn't allowed, then a lot of things would never happen, like the creation of Gay Authors.
I don't agree with anti-gay people like Mr. Robertson, but it's his right, and an important one, to express his beliefs. George Washington, who I'm sure you know, said “If freedom of speech is taken away, then dumb and silent we may be led, like sheep to the slaughter.”
Just as we have the right to express our disagreement with the opinions of others, they have the right to be heard just like we do.
Censorship in any form is the foundation of tyranny. Freedom is the most valuable idea of all ideas, and anything that lessens it is a step toward oppression and dictatorship.
In the end, I wouldn't try to silence anyone, because I value my right not to be silenced. That is the foundation of a free society, and without it our freedom will disappear.