Heh, I'm suddenly requesting hacks on a frenzy, eh?
Ah well, this one's for the Infogrames North America board again.
Suppose, we have a forum there, the Wheel of Time Book Forum, where there are on-topic threads, roleplaying threads, and off-topic threads. Now, we would like to see a prefix used in a similar way as currently "Poll: ", "Sticky: " and "Announcement: " are used, but then have the options "WoT: ", "RP: ", and "OT: " and have those options as three radio buttons somewhere in the New Thread template/page.
This way, a user can post a thread, point out which type it is, and then that type will show up as a prefix in the same way Poll etc. do, now.
Also, this should only be visible on the WoT-specific templates, so that those three options don't show up on forums that AREN'T using the WoT Styleset.
Oh and it'd be best if none of the three prefixes is turned on by default, and that if the user doesn't select one, no prefix is used, either.