Authenticated users have completed the basic registration process by filling in the “Create new account” form and logging in. Authenticated users may read and post to all of the General Site Message Boards.
They may also comment on most of the books and blog entries, but their comments are subject to approval by the moderators. This is to deal with trolls and spammers.
NOTE: Comment approval by moderators is disabled as a trial - all comments should appear on the site immediately.