This forum is closed to new posts due to low activity and a deluge of spam. It is kept online as a static historical record. If you want to read about or discuss esoteric programming languages, the Esolang wiki is the place to go. An archive of the forum is available.
Seriously speaking, though, a "flat file system" never works out for anything more complex. When the number of posts and threads starts growing, this kind of UI will get very, very frustrating to use.
http://kidsquid.com/phpBB2/ seems like the way to go, in my opinion. It's registration-free, and it's based on phpBB which is pretty much a standard for forums nowadays.
Don't mind me, I'm drunk.