UPDATE: New version available in the downloads section!
Well as promised by Notch himself, a new minecraft update was released stopping all hacks from being used.
You can still use the WoM client to play minecraft which most people choose to do as it's a much better platform to play on instead of using your internet browser.
Most WoM clients will automatically download the new minecraft.jar update resulting in the hacks stopping but allowing the new blocks to be used.
All members will be informed of any new developments as soon as they are released, if you are not a member we recommend you sign up to receive the latest notifications.