We have a Winner. That one is very popular
For curiosity sakes, this Forum is very popular
http://www.godlikeproductions.comIt uses a custom built php Forum. I know of no forum software that will make any Forum look like that
The old libertyforum.org which was shutdown had about 40,000 members but only several hundred were Active members
It used the old wwwthreads software and looked very similar to ubb.threads of today, except that it had a Self Search feature and ability to Flag other users to posts, which was very popular.