Registration of new users is now enabled at Obama Conspiracy Theories. Logged in users have access to a control panel that shows some site statistics and a list of recent comments. If for some reason the blog ever has to be limited to registered users, those registered will have immediate continuing access to make comments. If you are a frequent commenter on the blog, I suggest you create an account.
If you want an account, just sign up on the account registration page. A valid email address is required. Unless otherwise required by law, your email address will be kept confidential. Lots of web sites will let you set up “anonymous” email addresses.