It has not been necessary to monitor comments on this blog so the policy will continue to be an open one. However, it is not helpful to discussion if people do not sign their comments (with an assumed name, if they really feel shy about revealing their real ones.
So, this is a polite request: please try to sign your comments. A Google account for blogs is free and easy to acquire. If you do not wish to bother, by all means don't. It is just as easy to put up a seemingly Anonymous comment and put a name under it.