It probably only works once.
Essentially, you are trying to make it seem as if you got `hacked`.
Blizzard will then roll-back your account to a previous state (generally a day) so you get your character & items back.
List all your valuable items on RMAH at a "that will definitely sell" price.
Download Hotspot Shield - here or any other proxy; this is a proxy which can be used to change your `location` to a different country in order to simulate the fact that it isn't `you`.
Once Hotspot Shield/your desired proxy is up and running, login and delete ALL your Diablo characters
Remove Hotspot Shield/your desired proxy
Wait a couple of hours and log back in to Diablo
Submit a support ticket on the Blizzard website claiming you were `hacked` and that you wish for a roll-back
You'll then have all of your money you've made from RMAH sales, and ALL of your items back.
Basically free money at the expense of a roll-back. If you have a throw-away account, or if you're quitting the game, this is a good way to profit twice. (one for the original sale, and once for the second sale)
I take no responsibility for any loss in characters/items, etc.
Use this at your own risk.
Note: For D3 rollbacks, 2+ rollbacks will result in disabling of the use of RMAH.
Inspiration & Idea credit given to "Serae"