Every BBC Internet site on which the public places material should be moderated. This may involve premoderation, postmoderation or reactive moderation. The moderator may in some exceptional cases also be the host.
- Premoderation is where material cannot be accessed by visitors to the site until the moderator has seen it and decided it is suitable for placing on the Internet.
- Postmoderation is where the moderator sees the material, and decides whether it is suitable to remain on the site, after it has been posted.
- Reactive moderation is where visitors to the site alert the moderator to an inappropriate or offensive message. The moderator does not read every message.