OK, so I just checked it out. Being an administrator, I can change the titles. I pretty sure a moderator can do this too.

Would anyone like the job of being a moderator of this forum?

Duties would be simple. Close and mark the threads (in the title) when whatever is being sold is sold and the general moderator duties by locking/editing threads which don't follow the guidelines here (this doesn't happen very often, but you never know).