Is my msn being hacked?

this happened for the second time today. As i just sign in, i receive that notice when you get if someone try to talk to you when you are not connected. Basicaly it is like one of my contact tried to talk to me but the thing is, instead of having a usual message (like sup? or any ordinary stuff) there is link on his msn window. I have not tried to click on it but what i find weird is that it is the second time it happen but from different contact of mine (and those contact do not know each other). Did this kind of stuff happen to any of you here? :puzzled: