What is Your Comment Policy?

I read this article at Logic is Variable and agree with the blogger. I too have more or less same comment policy. “The fact is that the thoughtful and witty comments, follow-up questions and extra information all add a lot to any blog and make it more meaningful. Comments by informed readers can add so many interesting and important components to any discussion. And given the blogosphere's potential to raise the level of intellectual discussions, the ideas are valued not only by who says them, but by their merits. The author of the blog more or less creates a topic and everyone else who visits there gives input.'

What is your comment policy?