[Edited by Tylos]

[theemo]

4. PERSONAL NATURE OF THE ACCOUNT. Use of the account is strictly personal. The account must not, even temporarily be shared with or otherwise extended to another person (whether free of charge or not), nor may it be used in any way (whether free of charge or not) that is extraneous to the proper normal use of the Game. The User is fully responsible for the use of his/her access account, and for the use made of his/her account by his/her underage child or by any other person who has access to it.

You can read the EULA here.