Please see also our moderation guidelines.
There are two kinds of moderators for Nupedia: open review moderators and mailing list moderators.
Open review moderators are responsible for checking comments posted on open review pages for articles in a particular subject area. While comments from the author, the category editor, the lead reviewer, and the category peer reviewers are unmoderated, comments from everyone else are moderated. Generally speaking, all comments are approved unless they are impolite or simply add nothing of importance to the discussion. Moderators are expected to have at least a bachelor's degree or similar qualification in the subject area they're moderating. You can easily apply online to become an open review moderator.
Mailing list moderators are responsible for checking e-mails posted on Nupedia mailing lists. Generally speaking, all comments are approved unless they are impolite or simply add nothing of importance to the discussion. If you're interested in becoming a moderator for a particular mailing list, please write the editor-in-chief at lsanger@nupedia.com.