There needs to be a way to sell things from one person to another; a way other than by auction. I propose a personal vendor menu (perhaps linked to a particular bag of things we'd actually like to sell, as opposed to our entire inventory) that we can set our own prices on, and that can be accessed by the menu other people see when they IM/friend/splank us. This would be easier and somewhat more foolproof than the current way, which essentially means you can only sell to people you know (so you don't get scammed), and involves standing by a mailbox awaiting payment.