Tech Geek, that is standard behaviour of WikiForum
It is used in its own namespace but could be used instead of the
discussion page as well. It give
much more structure and enforce respectation the time depending
structure of the thread.
It is propriety software. It is part of Wikibox Blue of Wikiation
This very valueble for my Organisation. I have many doubts, but maybe I
consider to make it Open
Source. I will start a new thread about this.