How to log as invisible

Hello there,
How many time u get tired of ur friend that call alwayz you when you are online, or you just want to play just normal game but your clanmates call you for a cw and you can't say no?
There's a simple way to "escape" from this, log as invisible!
How?
Simple when you put your username and password just add a space at the end of you username, and then enter your password.
Ex: myusernamehere[space]
writingmypasss
Click on log in!(or just press enter)

When you log in and open friend list maybe u still see the list is clear, no contacts, and if u go to check clan tabs no one is on the clan, even you, and all the other see you as offline.
When you will relog witouth the space at the end it will be like always it was ;D

Works for EU, not tested on NA but i think it still work