Ok.. This is my first submission that actually might help someone, so don't flame. You may also know this scam, I couldn't find it in the first few pages, so.....
First, buy a small lustrous pearl, it should be pretty cheap (Compared to servers) off of the auction house. Broadcast in /2 or trade channel, w/e and say "WTS Righteous Orb (lower than your AH price. Not too high or people might not want to buy it right away). When someone whispers you say "Ok, I'm busy right now, let me C.o.D. it to ya." They'll most likely say ok, so you go to the mailbox, and type their name in, and underneith that label the letter as "Righteous Orb. Cheap." Give them a nice little custom sentence to make them pay attention to the kindness and not the item, and they'll take it, most likely. You'll get your money and bam. IF... they confront you, say "Oh, whoops.. I accidently sent the wrong orb, they look the same y'know". Then they don't have any dirt on you for scamming them, it looks like a big mistake. Then you can just ignore them. Have fun, I've made some money with this today.
By the way, this is not ALL my idea, I modified it, and added some more things to it, to make it safer, like the apologies, and the kind little paragraph with the letter.
[ame=http://www.youtube.com/watch?v=zl2QDxVOKao]YouTube - World of warcraft scam-get 10 gold[/ame]
So I'm not taking all credit.
Thanks, Blugahin.