While a site administrator can set reviews to be unpublished when first submitted by a user and be "approved" by being published by an admin this workflow fails when a user edits their review or a site is configured to auto-publish submitted reviews. There needs to be a mechanism separate from published status to denote when a review needs to be screened by an administrator.
Screened status for reviews to know which reviews need further moderation. Status is set to false when a review is edited. Independent of the published status which controls visibility but does not denote reviewed status on sites that auto publish reviews. Marking an unpublished review as reviewed will publish it automatically.
Active
2.0
User interface