Cyworld Registration Failed

There are so many people using Korean Cyworld. I hope to open one, Korean Cyworld as some of my favourite Korean idol use it, but I think I have to forget it! It need a handphone number to register. Oh my God! I found out that last time no need to use handphone nomber to register, can use e-mail to register! But nowadays they get sticker! Why don't I register that time? Now I regret! Or maybe I should not cause last time I still don't know what is Korean Cyworld? Haiz!