Comments on HN tends to be voted down if they are not substantial. To quote http://ycombinator.com/newswelcome.html http://ycombinator.com/newswelcome.html: Doe

Comments on HN tends to be voted down if they are not substantial. To quote http://ycombinator.com/newswelcome.html http://ycombinator.com/newswelcome.html: Does your comment teach us anything? That page also says that a simple thanks may be acceptable, but the consensus seems to be that those comments are superfluous as well.