I've had MANY emails from readers who are thwarted when trying to post a comment. I have no idea why but, as you see, activity is way down on my blog so you are not alone. This advice came from a reader who was successful. if you are not registered you need to click on the Disqus icon immediately above "add a new comment". It will bring up a dialog box that allows you to register. If you attempt to register by clicking on "post as a guest" it can not be done, even if you select the register option. Hope this helps. And really sorry for this. Sometimes it doesn't even let me register or comment. If all else fails, email me your comment and I will post it and maybe knock some sense into its head.