We will be undergoing a Forum software upgrade this weekend, Sunday at 1am CST. This will be to get on a more current version of VBulletin. In addition, we'll be installing Sphinx Search, which will provide faster searching of our Forum database than the native VBulletin search provides. The forum will have to be down for a short period while this upgrade occurs. Other than the improved search capability, the upgrade should be pretty transparent to you.
On another note, we have been enhancing our Thread Prefixes structure and the assignment of thread prefixes to the various subforums. The purpose of this is to make it easier to navigate the site and find the threads/content that you are looking for. The new prefix structure has been optional up to this point. We'll begin phasing that in as a mandatory field for certain subforums - specifically the 1) MBTI (tm) and Jungian Cognitive Functions and 2) Enneagram subforums. It will first be implemented in the NT Rationale sub-sub forum. If you notice any kinks in how this is working, please let me know.