It's a Wordpress board, and I believe it was chosen because it was a lot easier to customise, made to look distinct and maintain than other off-the-peg things.
That was until we all rocked up and said that a load of stuff was missing/didn't work/we didn't like for any specific reason
Everything that was requested to be changed, has been changed. Sadly, some bits can't on here so, um, they haven't. Replies can be marked as Private, but not only can all Keymasters also read all of these, so (I think) can the person who created the original topic so they're a bit crap.
They're things that can be rather handy on messageboards, but I also know from experience of boards elsewhere that they can become a massive pain in the arse, so I'm rather ambivalent about them. Hope that helps!