seems a bit limited, but to expand on the idea, basically some type of ingame player created quest system. The player sets the terms and the server basically takes and holds the reward. People could check these boards looking for jobs to do. when they accept, the offer disappears.

the problem? probably implementation. Theres only a few things the server can check for and an almost infinite amount of things a player could want.

I think the game was created hoping these types of things would happen, but i dont know how easy it would be to implement a formal system for it, and you could probably just shout for it, or use the party search system for this, (if anyone actually used the party search system that is)