How Do You Post Your Response When You Want To Comment On A Debate Page?

Up until a week or so ago, there used to be comment windows at the bottom of each side of the debates, where you could put your opinion or thoughts on the subject.  If you go back to the Debates page and click on any one of them, you'll notice a window with red writing at the top that says BlurtIt is no longer accepting new debates, and are presently not allowing any comments to be written on any of them that are currently there.  I don't know why this happened, and hope that someone else answering this question can shed some light on the reason for it.