now the problem with UBB6 is that it's not HTML, so a lot of HTML based hacks and everyone's favorite: Who's Online
don't work.
here's how it can be done:
instead of having the forum monitor where you are all the time, it only monitors you when do something and you get timed out after a user determined time.
so i i click post, it sends a message to who's online, and it updates who's saying i'm posting to "whatever"
and etc.
a few of the other HTML based hacks could be done using this method.