Anyone who wants to leave a comment is welcome to. As long as you sign in. If you have something to say, you should be proud of and stand behind it, like I do. That's sort of what is great about this country- we can do that.
I think good, cogent discussions are well worth the time and effort. If you have an opinion, voice it, after you sign in. If you don't sign in, and do comment, it's rather like spray painting grafitti- people may read your information, but they ignore it, because no one knows who wrote it, and there is no way to respond :)