This way is new, its real because its an admin code.
Just ring free-phone 0906 900 9100 and enter your Free Credits Code when asked.
A friend who hacked an administrator on habbo found this. It�s the admins free credit code.
Once done, go onto your account and click on your purse. Type in the code again and you have your 1000 free credits.
You can do this as many time as you want. Enjoy, I have!