This would make a nice plugin..

[ZiNgA BuRgA]

(06-05-2010 09:12 AM)Harry Wrote:  You should be able to view this page..
http://www.easternuswx.com/bb/index.php?showforum=15

Note where it has the regions.. Before when you clicked the region you wanted ( MW for example ) ) the thread list in that forum would only show threads that were marked  MW. When you made a post it as well asked you to select what you wanted it under and thus in this case MW. As said they got rid of it and so now when you click a region it takes you to the new subforum for the region.

So how is it really functionally different from going to a sub-forum?
Displays stuff via AJAX?

(06-05-2010 09:12 AM)Harry Wrote:  BTW.. I have yet to see anything like X Threads on any system. I use IPB for another forum and know there is nothing like that there anyways. That truly is a one of a kind plugin unless i missed something somewhere.

XThreads does tie in quite heavily with how MyBB does things.  You could probably get most stuff across to any other forum system, though templates would depend a lot on how the system handles that.  It may not even be feasible with other forum systems.
There's possible other reasons too - it being a rather abstract idea, rather tricky to do, as it needs to modify some core functionality of the system (eg modifying how templates are loaded and cached), and doesn't really actually do anything by itself (difficult to promote to "clueless" (the majority) forum admins).