Right now in the node manager, there is an option for "Display in node list"; if unselected, a node is hidden from the forum list... which is a good feature. If someone knows the URL to the node or posts within the node, they can still get to it. However, there is an issue with this. The node isn't truly hidden. Posts in said node can still be found using the "find-new/threads" function. Posts and responses will also appear in "recent-activity" pages. If the purpose of the forum is to be hidden, then clearly its not doing it's job.