Added a clarification to the rules: "Understand that hiring someone else to PvP or PK someone is the same as initiating it yourself; your rival is free to PvP or PK you in response. Threatening to kill someone IC, even if you're bluffing, may result in a PKing response toward you."
Folks, remember, logging in means you consent to PvP - and while we never want folks forced into it, if you are hiring people to kill someone's character, or threatening to kill them; they're more than fully justified to counter-attack you.