Thank you very much for informations, friends. But i think there must be a directory. I hope they make one soon. Yeah may be you're right but you can choose if anyone can search your number or not. so i don't think it's so bad to reach people that you want talk..
Yes, there's no such thing. Why don't you ask via ICQ/e-mail for his mobile number? Maybe he has it in his ICQ details. BTW I don't use my cell phone, I turn it on about once a week only to see that minimal number of people tried to call me