We've upgraded our content management system and in doing so we've initiated some changes including requiring users to create an account before being allowed to comment.
We know some of you like being anonymous when commenting and you can still remain anonymous to other users by picking an obscure username and not including any personal information in your profile. And you can rest assured that the email address you use to authenticate your account will remain private from users.
If you're having problems registering or commenting we have setup a support page and email address for you to contact us. As well starting today you can sign in and comment using any of the following services if you have an account with them; OpenID, TypePad, Yahoo and Google.