Open is selected per default, and a Prefix is required in order to post a thread.
The Active Threads listing has five tabs: Open, Unanswered, RE & Gods, Threshold, and Private. It operates based on the thread prefixes, which is why they need one to show up, and that's also the reason all old threads aren't on the list. Basically, the tabs are..
Open: all currently active, responded to Open threads.
Unanswered: all unanswered threads, regardless of prefix.
RE & Gods: all currently active threads where a God and/or RE has posted, regardless of prefix.
Threshold: all currently active Threshold threads.
Private: all currently active Private threads.
Battleground and Stealth should never show up, nor Secret Grove threads marked with "foal stats".
However, I have a question for you all. Do you think the list looks cluttered? I do, for the most part, as the Unanswered tab is very "clean" in comparison to the others (and Threshold is somewhat of a lost cause with the Species column!), but I want to know you guys' opinions on it, as the others I have asked have disagreed with me. If the majority thinks it's cluttered, I can take out the "Started" date column, giving the others more space.
And on another note - yes, those lists might become very long! xD There's been talk of setting up a thread, like the :: Rank Updates ::, for requesting thread archiving once it has been finished, to help keep the boards cleaner (but the usual archiving sweep would still be completed at the start of every month).. but, I'm leaving that to the organization department. :B
If you have any questions/see anything wonky with it, just let me know. :]