On WoW: I used to put an item up for about 560g on the AH, then go on my bank alt and say: WTB meh meh meh for 723g!. Most noobs would think, Hey, I can make some extra gold! So, they would buy the item off the AH, Then when we get ready to do the trade, I'd say I need to go onto my main to get the gold, only to get the gold they just used to buy the item. ^_^
Then I used the gold I got from scamming the noob to hire some bloodelf Stripers! GOOD TIMES!