You can register with Facebook
Or you can create an PTTCorp account
Note: Username may contain at least 5 alphanumeric characters with only letters and numbers
Note: Currently you can only register with gmail, hotmail, yahoo or .edu domain (i.e. @ntu.edu.tw).
Note: Password may contains at least 5 characters with not too simple sequence (i.e. 12345, qwerty).