World of Warcraft
Oath of Murin For those who don't know, one of the more annoying parts of starting out in World of Warcraft is the fact that you can't carry very many items (initally, you can only carry 16 items at a time), so you have to go back to the closest town quite often to sell the stuff you've picked up, then walk back to the area where the monsters are.

Well, Murin can make these bags that let you carry more stuff...6-slot bags, and you can have 4 bags in addition to the standard 16 slot backpack you start with.

Anyways, Murin mentioned last night that he can now make 8-slot bags, given the right ingredients (which are gleaned from the booty of dead monsters). After I pestered him for a bit, he agreed to make me one. But, as that would require me dropping one of my 6-slot bags, he asked me to pass the bag along to some other new player. So I took an hour or so to walk back to one place where new players are dropped into the game, a town called Bloodhoof Village in the area known as Mulgore.

(12:15:56) Andrusin: I walked back to Bloodhoof Village in Mulgore yesterday and started making some stuff to bring up my leather working skill, and pretty much gave them away to newbs
(12:16:02) Andrusin: I also passed your bag along
(12:16:12) Murin: cool
(12:16:32) Andrusin: And extracted an oath that, when the time came that the newb couldn't use it anymore, he'd do the same
(12:16:42) Andrusin: That is, pass it to a newb rather than sell it
(12:16:51) Andrusin: I told him it was Murin's Oath
(12:17:06) Murin: awesome
(12:17:09) Murin: you really did that?
(12:17:12) Andrusin: yeah
(12:17:14) Andrusin: It was funny
(12:17:17) Murin: wow
(12:17:55) Andrusin: I just stood there in the newb village shouting "Free 6 slot bag" until someone came up to me and said "Is it really free?" I said "The only condition is that you take Murin's Oath."
(12:18:09) Andrusin: Then I made up some goofy oath and made him repeat it
(12:18:18) Andrusin: I even did the "I, <state your character's name>"
(12:18:33) Andrusin: And he's like "I, Ogthar..."
(12:18:41) Andrusin: I laughed.
(12:18:42) Andrusin: :-)
(12:18:49) Murin: that's so cool

Here's the oath:

I, <state your name>, do solemnly swear to uphold Murin's Ideals of Newbie Helping. By accepting this gift, I promise to continue the tradition of helping newbies by passing this same item on to someone of lower level when it is no longer of use to me. I vow to make occasional trips to beginner areas and help those trying to achieve quests beyond their means. When passing on items, I promise to extract from them this self-same oath, or one like unto it in spirit and intent.