I recently just duped about a 1000 Gold, and this is how you do it, I'm warning you now though, its not easy and only do it once..

Ok what you do is on your account you vendor all your gear, and send all your gold to your friend, then log off and delete your character. Then maybe about one hour later you go on a level 1 character and page a GM saying that you got in a fight with your brother, and he went on your character and deleted it. Give them about 8 hours, and they will restore your character back with all your gold, funny thing is they don’t take away the gold you sent to your friend.

Go to a vendor who sales limited objects (patterns or what ever). Raise up your ping to 180-210 (or maybe higher), by downloading some, or run a program. Buyout the limited objects down to 1 and than right click on the item as fast as you can.

You have a chance of 90 %, that you get the item 2 times, paying only one. This chance is given, too, if the vendor has only 1 of them at the beginning.

I created character with a name that violated Blizzard's TOS, as it was rude and referred to human anatomy. Somebody complained regarding my name and a Blizzard GM whispered me. He told me it was against the TOS, and next time I log on, it will ask me to rename my name. I agreed and requested five minutes to get to a safe spot to log out. I made my way to a safe spot (had to use a potion to not die) then logged out. When I logged back in, I was prompted to change my character name. Once that was done, when I came back into the world, my character was rolled back about 5 minutes, before I started heading toward a safe spot to log out. Everything was rolled back: my EXP, position, and items (my potion came back). All I got was a little email from the GM saying "don't make vulgar names"... pretty much.