I've always been curious what "quest" in a player's title means.
When I type 'quest', I get a message "you are now part of the quest". It doesn't give any information on the quest or how to join. Sometimes, I think that the imms give a quest to GM's which is great, but mostly I think that "quest" in the title means that someone is pk and doesn't want to participate in pk at the moment, so it's a secret message to other pk'ers not to attack them.
I still have in the back of my mind about going pk, and would love to know if putting 'quest' in your title gives you some control whether you want to participate in pk or are on a pk break and for other people to leave you alone.