Ofcource you helped
I see as temporary solution though, I'm going to test how new WLM will see Yahoo usernames. As it's not connected with windows live ID people should be able to see my nickname.
The problem is, no one sees my screen name with new WLM if I set one from ebuddy. I usually put "mobile" infront of my nick, so people know to not send me too long messages on small mobile screen. I had no idea with new WLM people can not see that, before using it myself, didn't understand why suddenly no one cares about "mobile" message. Now I understand, they just can not see it. Very stupid to remove nicks.
If it won't work with Yahoo, I will just use skype and give up windows messenger