well its that NobLe says:
but it makes some mistakes...
i put MY msn adress when i was online and it told me that i was offline :S
i put a friend's msn adress when he was online and the same thing again :-\ :-\ :-\ :-\ :-\ :-\ :-\ :-\ :-\ :-\ :-\ :-\
EDIT:
//offtopic mastro kai gamw ta avatars :D